Question

(3.18 x 10^5) x (4.25 x 10^3)

Answer 1

10^5 =100,000
10^3=1,000
Multiply 3.18 by 4.25=13.515
3.18 by 1,000=3,180
100,000 by 4.25=425,000
100,000 by 1,000=100,000,000
add it all up

Answer 2

I think your answer would be 1351500000.

Please check this answer.

Answer 3

10,428,193,515