I'm not too good at math at all I need help with these three problems any feedback or help will be greatly appreciated

1)108 divided by (6/7) 2nd power + 180 divided by (3/5) 2nd power

2) Find the base of a triangle with area 114 square inches and height 12 inches

3) 15q/16 x 8/30q multiply simplify if possible

These are the last three problems on my assignment...any help is greatly appreciated thank you