App Inventor 2 minusing value by the whole contents of a list -


i wondering if there way minus 1 value contents of whole list in app inventor.

for example if list1 = [4, 5, 4, 5] , want let's subtraction of 7 - 4 - 5 - 4 - 5, how in app inventor 2?

write procedure sum list , calculate 7 - sumoflist this

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