For example :- 134 ÷ 2 Start with the left most number.
Since 1 is smaller than 2 so we take 13 and divide it by 2.
13 is not exactly divided by 2, so we find nearest number to 13 which is exactly divisible by 2.
12 is the nearest smallest number to 13 divisible by 2 at quotient 6 and remainder 1.
Now, put the next digit 4 of 134 (dividend) to the remainder 1, which give 14.
14 is exactly divisible by 2 at quotient 7 and leave remainder 0.

In Division Operation we come across some following concepts :- 1). Dividend
2). Divisor
3). Quotient
4). Remainder
(You can study all these concepts from above respective links)