please help me on this it looks weird i will give you a brainly in return no links please

Answer:
A
Step-by-step explanation:
(1.7x10²³) and (3.4x10²³) cancel into 0.5.
0.5(8x10^-14) = 4x10^-14
Answer:
13.6x/3.4 x 10^14 This is a fraction by the way hope this helps
Step-by-step explanation:
13.6
x
3.4
⋅
10
14