Thank you so much!
Going to add different solutions support for the order of components (for some like 3=1+2=2+1 it's already here I overlooked the 20 case).
I also studied British spelling, but decided to select the American one to use less letters on the screen (also to spell the numbers bigger than 100 without "and"s)
Happy 100 * 20 + 30 - 4 !