Simplify:

6^-1*r^-3*r^2/r^5

I know that looks really complicated... sorry! How would I begin?

Thank you!

r^-3*r^2/r^5 = r^-3*r^-3 = r^-6

The expression equals
6^-(r^-6) = 6/r^-6 = 6 r^6