Evaluate the following integral by making the given substitution: ∫ ((dt) / ((1 - 6t)^4))

Evaluate the following integral by making the given substitution:

∫ ((dt) / ((1 - 6t)^4))
u= 1 - 6t

Any and all help is much appreciated! Thanks so much in advance!

u = 1-6t

du = 6dt ; dt = 1/6du

∫ ((dt) / ((1 - 6t)^4)) = 1/6 ∫ 1/(u^4) du

1/6 * -(1/3)(1/u^3) + C

now just substitute u for 1-6t and simplify.