Question

3.96 x 10^2/ 1.5 x 10^6

Answer 1

If your expression mean:

( 3.96 x 10 ^ 2 ) / ( 1.5 x 10 ^ 6 )

then:

3.96 x 10 ^ 2 / 1.5 x 10 ^ 6 =

( 3.96 / 1.5 ) * ( 10 ^ 2 / 10 ^ 6 ) = 2.64 x 10 ^ ( 2 - 6 ) = 2.64 x 10 ^ -4