312÷15 = 20 remainder 12
180 / 15 = 12
12 R 12
15 times.
180 / 15 is equal to 12.
15 times, remainder 10
15 times 12 is equal to 180.
15 will go into 42 two times with 12 left over.
14 times... without using a calculator !how many times does 15 go into 210
18
6 times with 12 remaining
12