We're dividing 83963721 by 517 
Let's see how many times 517 fits into 83963721.

Advancing to step 1:
If we divide 8 by 517, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 517

Going ahead to step 2:
517 can be fit into 83 0 times, resulting in a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Take the next digit (9) from the dividend and append it to 83, then repeat: 839 / 517

Advancing to step 3:
517 goes into 839 1 times with a remainder of 322.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 517 from 839 and we're left with 322.
Include the next digit (6) from the dividend after 322, then repeat: 3226 / 517

Step 4:
If we divide 3226 by 517, we get 6 and a remainder of 124.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we take 3102 away from 3226, we end up with 124.
Take the next digit (3) from the dividend and append it to 124, then repeat: 1243 / 517

Moving on to step 5:
1243 divided by 517 is 2 with a remainder of 209.
Put 2 as the next digit of the answer. 
Result so far: 162.0
If we take 1034 away from 1243, we end up with 209.
Bring next digit (7) of the dividend behind the 209 and repeat the process: 2097 / 517

Advancing to step 6:
517 goes into 2097 4 times with a remainder of 29.
Record the quotient 4 as the next digit in the result. 
Result so far: 1624.0
Deduct 2068 from 2097 and we're left with 29.
Bring next digit (2) of the dividend behind the 29 and repeat the process: 292 / 517

On to step 7:
517 goes into 292 0 times with a remainder of 292.
Record the quotient 0 as the next digit in the result. 
Result so far: 16240.0
Deduct 0 from 292 and we're left with 292.
Grab the next digit (1) from the dividend, add it to 292, then carry on: 2921 / 517

On to step 8:
2921 divided by 517 is 5 with a remainder of 336.
Use 5 as the next digit of our solution. 
Result so far: 162405.0
If we take 2585 away from 2921, we end up with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

On to step 9:
If we divide 3360 by 517, we get 6 and a remainder of 258.
Record the quotient 6 as the next digit in the result. 
Result so far: 162405.6
If we subtract 3102 from 3360, we get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Advancing to step 10:
When dividing 2580 by 517, we get 4 with a remainder of 512.
The number 4 becomes the next digit in our result. 
Result so far: 162405.64
If we subtract 2068 from 2580, we get 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

On to step 11:
When dividing 5120 by 517, we get 9 with a remainder of 467.
Write down 9 as next digit of the result. 
Result so far: 162405.649
If we subtract 4653 from 5120, we get 467.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4670, and continue the process.

Let's proceed to step 12:
517 goes into 4670 9 times with a remainder of 17.
The next digit of our result is 9. 
Result so far: 162405.6499
Deduct 4653 from 4670 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

After the division, we end up with 162405.6499 and a remainder of 0.00017.