JSFiddle - React, Tailwind, and code Playground

HTML

<table style="border:1px solid purple">
  <tr id="1">
    <td>
      <input class="cell2" type="text" name="cell2" id="cell2" value="SAMPLE 1" />
    </td>
    <td>
      <input class="cell3" type="text" name="cell3" id="cell3" value="320000.00">
    </td>
    <td>
      <input class="cell4" type="text" name="cell4" id="cell4" value="8.16">
    </td>
    <td>
      <input class="cell5" type="text" name="cell5" id="cell5" value="2">
    </td>
    <td>
      <input class="cell6" type="text" name="cell6" id="cell6" value="640000.00">
    </td>
    <td>
      <input class="cell7" type="text" name="cell7" id="cell7" value="16.32">
    </td>
    <td>
      <input class="cell8" type="text" name="cell8" id="cell8" value="192000.00">
    </td>
    <td>
      <input class="cell9" type="text" name="cell9" id="cell9" value="5">
    </td>
    <td>
      <input class="cell10" type="text" name="cell10" id="cell10" value="960,000.00">
    </td>
    <td>
      <input class="cell11" type="text" name="cell11" id="cell11" value="40.80">
    </td>
  </tr>

  <tr id="Tr1">
    <td>
      <input class="cell2" type="text" name="cell2" value="SAMPLE2" />
    </td>
    <td>
      <input class="cell3" type="text" name="cell3" value="267314.36">
    </td>
    <td>
      <input class="cell4" type="text" name="cell4" value="5.95">
    </td>
    <td>
      <input class="cell5" type="text" name="cell5" value="1">
    </td>
    <td>
      <input class="cell6" type="text" name="cell6" value="267314.36">
    </td>
    <td>
      <input class="cell7" type="text" name="cell7" value="5.95">
    </td>
    <td>
      <input class="cell8" type="text" name="cell8" value="">
    </td>
    <td>
      <input class="cell9" type="text" name="cell9" value="1">
    </td>
    <td>
      <input class="cell10" type="text" name="cell10" value="">
    </td>
    <td>
      <input class="cell11" type="text" name="cell11" value="">
    </td>
  </tr>

  <tr id="Tr2">
    <td>
      <input class="cell2" type="text"...

JavaScript

function calculateSumInVanillaJs() {
  let fields = document.querySelectorAll('input');
  let value = 0;
  for (i = 0; i < fields.length; i++) {
    let itemVal = fields[i].value;
    if (!isNaN(itemVal) && itemVal != '') { // May need additional checks/regex to make sure value is a number
      value = value + parseFloat(itemVal)

    }
  }

  console.log(value)
}

//Attach to 'keyup'
calculateSumInVanillaJs();