There are two ways of solving a division question. The first way is using long division (for an explanation of how to long division, look up D-M-S Loop on this blog).
The short division method is similar to long division but we are using mental math to do some of the steps in your head. The 'subtraction' part is being down in our heads
Short Division example below:
1) 6 into 25 = 4
2) 1 left over, draw it in front of the 3
3) 6 into 13 = 2
4) 1 left over, draw it in front of the 2
5) 6 x 2 = 12, No remainder!
Here are some videos on how to do the steps:
Speed Guide to Short Division
MathsMaster on Short Division