52516657 ÷ 999 
Our goal is to divide 52516657 by 999.

Step 1:
When dividing 5 by 999, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 999

Going ahead to step 2:
999 goes into 52 0 times with a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 52 to get 52.
Grab the next digit (5) from the dividend, add it to 52, then carry on: 525 / 999

Let's proceed to step 3:
999 can be fit into 525 0 times, resulting in a remainder of 525.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 525 and we're left with 525.
Bring next digit (1) of the dividend behind the 525 and repeat the process: 5251 / 999

Moving on to step 4:
The number 999 fits into 5251 5 times, leaving a remainder of 256.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 4995 away from 5251, we end up with 256.
Take the next digit (6) from the dividend and append it to 256, then repeat: 2566 / 999

Moving on to step 5:
2566 divided by 999 is 2 with a remainder of 568.
Put 2 as the next digit of the answer. 
Result so far: 52.0
Deduct 1998 from 2566 and we're left with 568.
Grab the next digit (6) from the dividend, add it to 568, then carry on: 5686 / 999

Step 6:
5686 divided by 999 is 5 with a remainder of 691.
Write down 5 as next digit of the result. 
Result so far: 525.0
Subtracting 4995 from 5686 leaves us with 691.
Take the next digit (5) from the dividend and append it to 691, then repeat: 6915 / 999

Step 7:
The number 999 fits into 6915 6 times, leaving a remainder of 921.
The next digit of our result is 6. 
Result so far: 5256.0
If we subtract 5994 from 6915, we get 921.
Take the next digit (7) from the dividend and append it to 921, then repeat: 9217 / 999

On to step 8:
When dividing 9217 by 999, we get 9 with a remainder of 226.
Write down 9 as next digit of the result. 
Result so far: 52569.0
If we take 8991 away from 9217, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

On to step 9:
2260 divided by 999 is 2 with a remainder of 262.
The number 2 becomes the next digit in our result. 
Result so far: 52569.2
If we take 1998 away from 2260, we end up with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Going ahead to step 10:
The number 999 fits into 2620 2 times, leaving a remainder of 622.
The number 2 becomes the next digit in our result. 
Result so far: 52569.22
Subtract 1998 from 2620 to get 622.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6220, and continue the process.

After the division, we end up with 52569.22 and a remainder of 0.622.