4^3 × 5^5 -------------- 20^3
4^3*5^5 / 20^3=4^3*5^5 / (4*5)^3=4^3*5^5 / 4^3*5^3=5^2=25.
4³×5⁵ 4³×5⁵ ⁻⁻⁻⁻⁻⁻ = ₋₋₋₋₋₋₋₋= 5²=25 20³ 5³ₓ4³