We look at the division of 686628 by 54 
We want to divide 686628 by 54.

Step 1:
54 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 54

On to step 2:
The number 54 fits into 68 1 times, leaving a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 54 from 68 leaves us with 14.
Take the next digit (6) from the dividend and append it to 14, then repeat: 146 / 54

Going ahead to step 3:
54 can be fit into 146 2 times, resulting in a remainder of 38.
The next digit of our result is 2. 
Result so far: 12.0
If we take 108 away from 146, we end up with 38.
Take the next digit (6) from the dividend and append it to 38, then repeat: 386 / 54

Moving on to step 4:
The number 54 fits into 386 7 times, leaving a remainder of 8.
The number 7 becomes the next digit in our result. 
Result so far: 127.0
If we take 378 away from 386, we end up with 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 54

Going ahead to step 5:
54 can be fit into 82 1 times, resulting in a remainder of 28.
The number 1 becomes the next digit in our result. 
Result so far: 1271.0
Subtracting 54 from 82 leaves us with 28.
Include the next digit (8) from the dividend after 28, then repeat: 288 / 54

Advancing to step 6:
If we divide 288 by 54, we get 5 and a remainder of 18.
Write down 5 as next digit of the result. 
Result so far: 12715.0
If we take 270 away from 288, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 7:
When dividing 180 by 54, we get 3 with a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 12715.3
Subtract 162 from 180 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
54 goes into 180 3 times with a remainder of 18.
The next digit of our result is 3. 
Result so far: 12715.33
Subtract 162 from 180 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final result is 12715.33 with a remainder of 0.018.