19•6+14•6 = 6(19+14) = 6•33 = 1988•13+8•9 = 8(13+9) = 8•22 = 1766•32-6•23 = 6(32-23) = 6•9 = 5427•7-7•19 = 7(27-19) = 7•8 = 56
19•6+14•6 = 6(19+14) = 6•33 = 198
8•13+8•9 = 8(13+9) = 8•22 = 176
6•32-6•23 = 6(32-23) = 6•9 = 54
27•7-7•19 = 7(27-19) = 7•8 = 56