Answer:
Corrected - didn't see the 10 to the negative 2 in the denominator at first - sorry)
8000
Explanation:
Simplify
5.12 x 10 ^6/ 1.6 X 10 ^5 X (.4 X 10^-2)
Do the math
3.2 x 10/.04 x 1- ^-2)
8 X 10^3
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