Упростим выражение: b^(4 * 1/8) * b^(-3) / b^(-2 * 2) = b^(1/2) * b^(-3) / b^(-4) = b^(1/2 - 3 - (-4)) = b^(1/2 + 1) = b^(3/2).
Подставим b = 0.04 = 4/100 = 1/25:
(1/25)^(3/2) = ((1/25)^(1/2))^3 = (1/5)^3 = 1/125.
1/125 = 0.008.