51579 divided by 99 
We're looking to find how many times 99 goes into 51579.

Going ahead to step 1:
The number 99 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 99

Going ahead to step 2:
When dividing 51 by 99, we get 0 with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Append the next digit (5) from the dividend to 51 and continue with: 515 / 99

On to step 3:
99 can be fit into 515 5 times, resulting in a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 20 after subtracting 495 from 515.
Include the next digit (7) from the dividend after 20, then repeat: 207 / 99

Step 4:
99 can be fit into 207 2 times, resulting in a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 52.0
Deduct 198 from 207 and we're left with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 99

On to step 5:
If we divide 99 by 99, we get 1 and a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 521.0
The remainder is 0 after subtracting 99 from 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 6:
99 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 521.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
0 divided by 99 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 521.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 521.0 with a balance of 0.0.