# Calculations between two repeating groups

**URL:** <https://forum.bubble.io/t/calculations-between-two-repeating-groups/7594>\
**Category:** Need help\
**Created:** [November 4, 2016, 2:55am UTC](https://forum.bubble.io/t/calculations-between-two-repeating-groups/7594 "2016-11-04T02:55:52Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![1danielbaker](https://avatars.discourse-cdn.com/v4/letter/1/d26b3c/32.png) [@1danielbaker](https://forum.bubble.io/u/1danielbaker)\
**Post date:** [November 4, 2016, 2:55am UTC](https://forum.bubble.io/t/calculations-between-two-repeating-groups/7594/1 "2016-11-04T02:55:52Z")

</div>

I have 2 lists (I display them as repeating groups) that are built in my app, they must be able to run equations off one another. I’m not able to do them one-by-one because the user has multiple times in each list that they pick on two separate pages (I store both lists as 2 separate lists in the DB) How do I then run calculations off of the list items between the 2 repeating groups? I’m desperate!

---

<div class="post-metadata">

**Author:** ![fayewatson](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/fayewatson/32/2686_2.png) [@fayewatson](https://forum.bubble.io/u/fayewatson)\
**Post date:** [November 4, 2016, 4:10am UTC](https://forum.bubble.io/t/calculations-between-two-repeating-groups/7594/2 "2016-11-04T04:10:46Z")

</div>

Hey Daniel 🙂 Can you share a link to your app in the editor mode? That will give a better idea of how to do this with your data structure.