How do I substract two values from sharepoint column?

[smalusik]

Hello Team, 

Can you explain me how can I manage mathematics formulas in Microsoft Flow? I have two values 300 and 40. I would like to subtract this two values for examlpe =[value1]-[value2] . You can find details below:

Can you give me some adivce? Which action should I create and how should looks formula?

[sergeluca · Accepted solution]

Create a resulting variable like Compose3 and in the expression panel, type the following WDL expression: 

sub(int(outputs('Compose1')), int(outputs('Compose_2')))

[smalusik]

Hello Sergeluca,

It's work! Thank you so much!

[Jael]

I want to do thes but my values come from parallel branchs from an Apply each on each branch. How I do it?