What is each number in scientific notaion

For the first one it is 5 x10^{8}  

and for the second one it is 0.0005 = 5 × 0.0001 = 5 × 10−4

a

step-by-step explanation:

the denominator cannot be the same as one of the factors.

8 denominator times 2 denominator = 16

and 7 numerator time 11 = 77

77/16= 77/16 ( they cannot be further simplified)