# Duvidas com formulas / Questions about formulas

**URL:** <https://forum.adalo.com/t/duvidas-com-formulas-questions-about-formulas/33879>\
**Category:** External Collections, Custom Actions & Collections\
**Created:** [November 22, 2022, 12:57pm UTC](https://forum.adalo.com/t/duvidas-com-formulas-questions-about-formulas/33879 "2022-11-22T12:57:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![budhaaf](https://avatars.discourse-cdn.com/v4/letter/b/f14d63/32.png) [@budhaaf](https://forum.adalo.com/u/budhaaf)\
**Post date:** [November 22, 2022, 12:57pm UTC](https://forum.adalo.com/t/duvidas-com-formulas-questions-about-formulas/33879/1 "2022-11-22T12:57:00Z")

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Hello I would like help with formulas, I don’t know where to start

I have in my bank, the price of pieces (X) and quantity of pieces (y). I need to find out the billing of each order. For that I need to multiply x \* y =z in each record and add it to all the records displayed in the list sector

 ![1](https://us1.discourse-cdn.com/flex020/uploads/adalo/original/3X/6/b/6bcce79868f02a1242404ba83c23bc6930efdbeb.png)  
 ![2](https://us1.discourse-cdn.com/flex020/uploads/adalo/original/3X/e/f/efa2c9b06ecaabbb855865e942db88bbb600c3b8.png)  
 ![3](https://us1.discourse-cdn.com/flex020/uploads/adalo/original/3X/f/a/fa9944a474b748f5993f35afd49584e07b7541c7.png)

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<div class="post-metadata">

**Author:** ![budhaaf](https://avatars.discourse-cdn.com/v4/letter/b/f14d63/32.png) [@budhaaf](https://forum.adalo.com/u/budhaaf)\
**Post date:** [November 22, 2022, 1:01pm UTC](https://forum.adalo.com/t/duvidas-com-formulas-questions-about-formulas/33879/2 "2022-11-22T13:01:37Z")

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The way I’ve been doing this is going wrong by multiplying the sum of the entire list by the sum of the value of parts.  
I need to do the multiplication between x\*y =z first dps add all the z

 ![4](https://us1.discourse-cdn.com/flex020/uploads/adalo/original/3X/4/3/43a5832bd1d5223550bb9537006a384fc2d30eab.png)