well, put the 2 on the right side of the 3, and divide it's simple, 3 goes into 2, one time, now put the 1 over the 2, and put the 3 under the 2, and then subtract 2 from 3.
2-3= 1, how any times does 3 go into 1, it doesn't. so put a 0 next to the 1
and how many times does 2 go into 10. five times. so your answer in 1.5