Complete the following calculations:

A. 171 X 10^-11 / 417.0 X 10¹² = ?

Extra Practice:

A. 7.70 X 10⁴² X 3 X 10^-8 = ?

B. 6.02 X 10²³ / 8.0200 X 10¹¹ = ?

C. 35 X 10^-61 X 1.61 X 10¹¹ X 0.00120 X 10^-4 = ?