I want to have a submit button on this input fields.

Question

I want to submit values on this fields who are variables
https://code.sololearn.com/WPWwb88dCQNt/?ref=app

Answer 1

Use HTML tag to form proper form tag with input tags with attribute type equals to number. Do not use button tag in form and input tags, use input type="submit" to form submit button.
Process output using onsubmit event trigger on form tag.

Do not use document.write to update dom, use document methods like getElementByClassId

Check out the code here:
https://code.sololearn.com/Ww1GsMo62n8F/?ref=app