20 5 = 4
9 x + :( x, +, : ) 5 = 45
8 ❌ 8 = 64
5 x : - +( x, :, -, + ) 12 = 60
64 ❌ 8 = 8
80 ❌ 4 = 20
9- + x( -, +, x )9=18
30: - + X( :, -, +, X )11=19