The given expression is
(3.1 x 10^6) x (2.7 x 10^-2)
It becomes
3.1 x 2.7 x 10^6 x 10^- 2
8.37 x 10^6 x 10^- 2
By applying the rule of exponents, it becomes
8.37 x 10^(6 - 2)
= 8.37 x 10^4
