1527-(295+205),326*(99+1),128*8*4*25,422*(100+1)ˉ422,587-87-25.
1527-295-205 =1527-295+205=1527-500=1027326×99=326×100-99=32501125×32×25 =4000×25=100000422×101-422=400×100+422-422=40000