Dropdown and math operations

[AlexBeschier]

Hi there, 
I'm newbie here and hope you help me.

1) I need to create a dropdown with a list of names of components (i.e. resistor), that will allow to select more than 1 item.
2) When one component is selected, person need to insert qty (and so on for each selected item)
3) Each component should have linked a price 
4) When all required components will be selected and all qty will be inserted, where should be a field i.e. Money Spent, where will be shown SUM based on price of each component * qty of each component inserted by user

[WillowMobileSys]

There are a lot of different implementation details wrapped in your request that would take some time to describe how to do.  Luckily there is a lot of information on how to get started building an app.  I recommend reviewing the "Education" menu option under "Tips & Resources" at the top of this page.

[Kabuliño]

I recommend you take a look at this channel

https://www.youtube.com/watch?v=-1Nd7-eRZmo&ab_channel=MultiTechVisions

[Steve · Accepted solution]

See my reply here.