Question

F=6.67×10^-11×75×80/1^2

Answer 1

$f = 6.67 \times {10}^{ - 11} \times 75 \times \frac{80}{ {1}^{2} }$
$= 40020 \times {10}^{ - 11}$
$= 4 \times {10}^{ - 7} newton$