JavaScript function doubling data when loaded dynamically

I have a function called a calculator to which the page loads dynamically several times (whenever the user calls the calculator page).

When you load the first time it is normal, but the more you load the page, the more values multiply.

Ex: First time, if you type 1 > appears 1; the second time, if 1 > 11, third 1 > > > 111 ... it is as if the function is multiplying

I've already tried deleting the document declaration but nothing:

delete window.main;
delete calculadora;
$("#tool-show").clear();

The function is called in the following way:

 $(document).ready(function () {
       window.main =  new calculadora();
 }) // esse codigo é chamado toda vez que a  pagina carrega dinamicamente

Would you have any way to remove the chunked DOM function? because I'm not able to do this Below is the HTML of the page

  <div class="fix-top2">
  <div class="cctlr">
    <div id="display" class="displo">
        0
    </div>
    <input type="text" class="enters" id="vals" readonly="" style="float:left;width:100%">
    <input type="button" class="btns nbb nbl" id="vtb1" value="1">
    <input type="button" class="btns nbb" id="vtb2" value="2">
    <input type="button" class="btns nbb" id="vtb3" value="3">
    <input type="button" class="btns nbb nbr" id="soma" value="+">

    <input type="button" class="btns nbb nbl" id="vtb4" value="4">
    <input type="button" class="btns nbb" id="vtb5" value="5">
    <input type="button" class="btns nbb" id="vtb6" value="6">
    <input type="button" class="btns nbb nbr" id="sub" value="-">
    <input type="button" class="btns nbb nbl" id="vtb7" value="7">
    <input type="button" class="btns nbb" id="vtb8" value="8">
    <input type="button" class="btns nbb" id="vtb9" value="9">
    <input type="button" class="btns nbb nbr" id="div" value="/">
    <input type="button" class="btns nbb nbl" id="vtb1" value="C">
    <input type="button" class="btns nbb" id="vtb2" value="0">
    <input type="button" class="btns nbb" id="vtb3" value="=">
    <input type="button" class="btns nbb nbr" id="mult" value="*">
    </div>
    </div>

Below is the complete calculator script If anyone wants to take a look:

function calculadora() {
   parcial = 0;
   operaca = 'some';
   inputs = $("#vals");
   var def = function () {
       if (inputs.val() == "") {
           inputs.val(0);
       }
   }
   var display = $("#display");
   var some = function () {
       def();
       this.parcial = this.parcial + parseFloat(inputs.val());
       display.html(this.parcial)
       cleanInput();
   }
   var menos = function () {
       def();
       this.parcial = this.parcial - parseFloat(inputs.val());
       display.html(this.parcial)
       cleanInput();
   }
   var mutiplica = function () {
       def();
       this.parcial = this.parcial * parseFloat(inputs.val());
       display.html(this.parcial)
       cleanInput();
   }
   var divide = function () {
       def();
       if (inputs.val() == 0 || inputs.val() == "") {
           this.parcial = this.parcial / 1;
       } else {
           this.parcial = this.parcial / parseFloat(inputs.val());
       }
       display.html(this.parcial)
       cleanInput();

   }
   var displayIcnh = function (a) {
       inputs.val(this.inputs.val() + "" + a);
       console.log(event.type + " is fired");
   }
   var cleanInput = function () {
       inputs.val('')
   }
   var EnterExecute = function () {
       if (this.parcial != 0) {
           if (this.operaca == "some") {
               some();
           }
           if (this.operaca == "divide") {
               divide();
           }
           if (this.operaca == "menos") {
               menos();
           }
           if (this.operaca == "mutiplica") {
               mutiplica();
           }
       } else {
           some();
       }
   }
   var CleanOnes = function () {
       var here = this.inputs.val();
       if (here.length > 0) {
           this.inputs.val(here.substring(0, here.length - 1));
       } else {
           display.html("0");
           parcial = 0;
       }
   }
   $("#soma").click(function () {
       this.operaca = 'some';
       some();
   });
   $("#sub").click(function () {
       this.operaca = 'menos';
       menos();
   });
   $("#div").click(function () {
       this.operaca = 'divide';
       divide();
   });
   $("#mult").click(function () {
       this.operaca = 'mutiplica';
       mutiplica();
   });
   window.addEventListener("keydown", function (event) {
       console.log(event.keyCode);
       if (event.keyCode === 107) {
           event.preventDefault();
           EnterExecute();
           this.operaca = 'some';
       }
       if (event.keyCode === 109 || event.keyCode === 189) {
           event.preventDefault();
           EnterExecute();
           this.operaca = 'menos';
       }
       if (event.keyCode === 56 || event.keyCode === 106) {
           event.preventDefault();
           EnterExecute();
           this.operaca = 'mutiplica';
       }
       if (event.keyCode === 111 || event.keyCode === 193) {
           event.preventDefault();
           EnterExecute();
           this.operaca = 'divide';
       }
       if (event.keyCode === 49 || event.keyCode === 97) {
           displayIcnh("1");
       }
       if (event.keyCode === 50 || event.keyCode === 98) {
           displayIcnh("2");
       }
       if (event.keyCode === 51 || event.keyCode === 99) {
           displayIcnh("3");
       }
       if (event.keyCode === 52 || event.keyCode === 100) {
           displayIcnh("4");
       }
       if (event.keyCode === 53 || event.keyCode === 101) {
           displayIcnh("5");
       }
       if (event.keyCode === 54 || event.keyCode === 102) {
           displayIcnh("6");
       }
       if (event.keyCode === 55 || event.keyCode === 103) {
           displayIcnh("7");
       }
       if (event.keyCode === 56 || event.keyCode === 104) {
           displayIcnh("8");
       }
       if (event.keyCode === 57 || event.keyCode === 105) {
           displayIcnh("9");
       }
       if (event.keyCode === 48 || event.keyCode === 96) {
           displayIcnh("0");
       }
       if (event.keyCode === 13) {
           event.preventDefault();
           EnterExecute();
       }
       if (event.keyCode === 110 || event.keyCode === 46 || event.keyCode === 8) {
           event.preventDefault();
           CleanOnes();
       }
       if (event.keyCode === 194) {
           if (inputs.val() != '') {
               displayIcnh(".");
           }

       }


   }, true);
}