Explicație pas cu pas:
a=9•2^99•(2^100:2^99-2^99:2^99•5-3•2101)
a=9•2^99•(2^1-2^0•5-3•2101)
a=9•2^99•(2-1•5-3•2101)
a=9•2^99•(2-5-6303)
a=9•2^99•-6300