i want c# programme to do this operation
    IF
    7 - 3 = 124
    6 + 3 = 279
    5 - 2 = 63
    11 + 2 = 2613
    
    Then,
    15 - 3 =?


i want c# programme to do this operation
===

    IF
    7 - 3 = 124
    6 + 3 = 279
    5 - 2 = 63
    11 + 2 = 2613
    
    Then,
    15 - 3 =?

