Long Division Animation
With Long Division we follow this process:
Start with the leftmost digit of the dividend  


Repeat, using the new value 
Here is this process shown in action using the same numbers as on the Long Division page. We use it three times around to get the answer (press play button below):
Note: The remainders (such as "r25") are calculated just for the demonstration, we don't really need them when solving.
A Slightly Different Method
To save dividing and multiplying we can make a table of multiples of the divisor first, and then just "look up" the largest value that is not greater as we go, like this: