What is 2 to the third power times 5 to the sixth power minus 7 to the eighth power (Easy:))

-5639801 this the answer all you have to do is multiply 2 three times by itself which equals 8 then multiply 5 six times by itself and you get 15625 then multiply 7 eight times by itself and that equals 5764801 the multiply 8 x 15625  which will be 125000 then subtract that by 5764801 and you should get -5639801