Oh, dude, that's like basic math 101. 17 can go into 85 exactly 5 times. It's like dividing a Pizza into 5 equal slices - easy peasy.
Exactly 17 times
Exactly 5 times
17
272 ÷ 85 = 3 with remainder 17
1 R 17
The answer is 17, 17 multiple by 5 is 85.
17 with 1 remaining 86 - 1 = 85 = 5 x 17
85
85 times
9 goes into 85 9 times
85 goes into 42.5 .5 times
The GCF is 17.