22 + 17 + 8 + 13 = ( 22 + 8 ) + ( 17 + 13 ) = 30 + 30 = 60
44 + 4 + 6 = ( 44 + 6 ) + 4 = 50 + 4 = 54
11 + 19 + 1 + 39 = ( 11 + 19 ) + ( 1 + 39 ) = 30 + 40 = 70
50 + 17 + 30 = ( 50 + 30 ) + 17 = 80 + 17 = 97
22 + 17 + 8 + 13 = ( 22 + 8 ) + ( 17 + 13 ) = 30 + 30 = 60
44 + 4 + 6 = ( 44 + 6 ) + 4 = 50 + 4 = 54
11 + 19 + 1 + 39 = ( 11 + 19 ) + ( 1 + 39 ) = 30 + 40 = 70
50 + 17 + 30 = ( 50 + 30 ) + 17 = 80 + 17 = 97