How many times does 16 go into 90?

Okay so, lets try our factors starting with 2.

16x2 is 32: Nope not close enough!

16x3 is 48: Nope! You can also try by adding on to 48+16 is 64 now check by multiplying.

16x4 is 64: See we were correct!

16x5 is 80: thats 10 less than 90. Lets try one more time

16x6 is 96: Aww we went to high!

So your answer is 5 with a remainder of (your turn!)