Can somebody help me do this question?

Ineed if you could explain and give me the answer you! this needs done

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?