75-8*4 84+63:8 3*9+4*3 60-7*7 36+56:8 5*7+6*8
75-8*4 = 43 84+63:8 = 91,875=92 3*9+4*3=39 60-7*7=11 36+56:8 = 67 5*7+6*8=83