We're dividing 52938921 by 517 
Let's see how many times 517 fits into 52938921.

On to step 1:
517 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 517

Step 2:
517 can be fit into 52 0 times, resulting in a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 52, we get 52.
Append the next digit (9) from the dividend to 52 and continue with: 529 / 517

Advancing to step 3:
The number 517 fits into 529 1 times, leaving a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 517 from 529 and we're left with 12.
Take the next digit (3) from the dividend and append it to 12, then repeat: 123 / 517

On to step 4:
If we divide 123 by 517, we get 0 and a remainder of 123.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 123 and we're left with 123.
Take the next digit (8) from the dividend and append it to 123, then repeat: 1238 / 517

Step 5:
1238 divided by 517 is 2 with a remainder of 204.
Write down 2 as next digit of the result. 
Result so far: 102.0
Subtracting 1034 from 1238 leaves us with 204.
Fetch the next digit (9) from the dividend, attach it to 204 and continue: 2049 / 517

Going ahead to step 6:
517 can be fit into 2049 3 times, resulting in a remainder of 498.
The number 3 becomes the next digit in our result. 
Result so far: 1023.0
Subtract 1551 from 2049 to get 498.
Bring next digit (2) of the dividend behind the 498 and repeat the process: 4982 / 517

On to step 7:
The number 517 fits into 4982 9 times, leaving a remainder of 329.
Put 9 as the next digit of the answer. 
Result so far: 10239.0
If we subtract 4653 from 4982, we get 329.
Take the next digit (1) from the dividend and append it to 329, then repeat: 3291 / 517

Advancing to step 8:
The number 517 fits into 3291 6 times, leaving a remainder of 189.
The number 6 becomes the next digit in our result. 
Result so far: 102396.0
Subtracting 3102 from 3291 leaves us with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Step 9:
517 goes into 1890 3 times with a remainder of 339.
Write down 3 as next digit of the result. 
Result so far: 102396.3
Subtract 1551 from 1890 to get 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

Advancing to step 10:
The number 517 fits into 3390 6 times, leaving a remainder of 288.
Write down 6 as next digit of the result. 
Result so far: 102396.36
If we take 3102 away from 3390, we end up with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 11:
When dividing 2880 by 517, we get 5 with a remainder of 295.
The next digit of our result is 5. 
Result so far: 102396.365
Deduct 2585 from 2880 and we're left with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Moving on to step 12:
517 can be fit into 2950 5 times, resulting in a remainder of 365.
Put 5 as the next digit of the answer. 
Result so far: 102396.3655
If we subtract 2585 from 2950, we get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

The final outcome is 102396.3655, with a leftover of 0.00365.