# Simple calculating question

**URL:** <https://forum.kirupa.com/t/simple-calculating-question/286962>\
**Category:** Uncategorized\
**Created:** [April 23, 2009, 2:58pm UTC](https://forum.kirupa.com/t/simple-calculating-question/286962 "2009-04-23T14:58:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![plus254](https://avatars.discourse-cdn.com/v4/letter/p/6a8cbe/32.png) [@plus254](https://forum.kirupa.com/u/plus254)\
**Post date:** [April 23, 2009, 2:58pm UTC](https://forum.kirupa.com/t/simple-calculating-question/286962/1 "2009-04-23T14:58:08Z")

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Hi,

I have four dynamic fields named

1. fieldone
2. fieldtwo
3. fieldthree
4. answer

and a submit button

I would like to be able to add up all the numbers inputted into the first three dynamic fields by the end user and the result displayed on the 'answer" field.

How do I do this, please help  
Thank you