Suppose you have a rectangle with length 360 units and width 84 units. Each turn, you cut off the greatest possible square from the rectangle. You do so until you have only squares. How many squares will you get? If you want BRAINLIEST! Answer these two other questions.

n is a natural number. Find the greatest possible value of the GCD of

(2n+25) and (n+15)

n is a natural number. Find the greatest possible value of the GCD of

2(n+8) and (n+13)

FIRST CORRECT 3 ANSWERS WINS BRAINLIEST!!! NEED ASAP!