calculus - Trigonometric integral evaluation: $int 4 sin^4 x cos^3 x ,dx$

Evaluate the following integral $$\int 4 \sin^4 x \cos^3 x \,dx$$

I can do simple integration problems, but problems like this seem to stump me, I created this problem so I could solve and compare it to another similar problem for my study guide, where should I start?