Insert the corresponding expression:
(4×65×10)−6= \left(\frac{4\times6}{5\times10}\right)^{-6}= (5×104×6)−6=
4−6×6−65−6×10−6 \frac{4^{-6}\times6^{-6}}{5^{-6}\times10^{-6}} 5−6×10−64−6×6−6