We look at the division of 53187955 by 817 
We want to divide 53187955 by 817.

On to step 1:
If we divide 5 by 817, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 817

Moving on to step 2:
817 can be fit into 53 0 times, resulting in a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 53 leaves us with 53.
Append the next digit (1) from the dividend to 53 and continue with: 531 / 817

Going ahead to step 3:
817 goes into 531 0 times with a remainder of 531.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 531 leaves us with 531.
Grab the next digit (8) from the dividend, add it to 531, then carry on: 5318 / 817

Step 4:
5318 divided by 817 is 6 with a remainder of 416.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtracting 4902 from 5318 leaves us with 416.
Take the next digit (7) from the dividend and append it to 416, then repeat: 4167 / 817

Moving on to step 5:
817 goes into 4167 5 times with a remainder of 82.
Put 5 as the next digit of the answer. 
Result so far: 65.0
If we take 4085 away from 4167, we end up with 82.
Grab the next digit (9) from the dividend, add it to 82, then carry on: 829 / 817

Going ahead to step 6:
817 goes into 829 1 times with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 651.0
Subtract 817 from 829 to get 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 817

Let's proceed to step 7:
If we divide 125 by 817, we get 0 and a remainder of 125.
Record the quotient 0 as the next digit in the result. 
Result so far: 6510.0
If we take 0 away from 125, we end up with 125.
Bring next digit (5) of the dividend behind the 125 and repeat the process: 1255 / 817

On to step 8:
1255 divided by 817 is 1 with a remainder of 438.
Write down 1 as next digit of the result. 
Result so far: 65101.0
If we take 817 away from 1255, we end up with 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

Advancing to step 9:
If we divide 4380 by 817, we get 5 and a remainder of 295.
Put 5 as the next digit of the answer. 
Result so far: 65101.5
The remainder is 295 after subtracting 4085 from 4380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Let's proceed to step 10:
2950 divided by 817 is 3 with a remainder of 499.
The number 3 becomes the next digit in our result. 
Result so far: 65101.53
Deduct 2451 from 2950 and we're left with 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

On to step 11:
4990 divided by 817 is 6 with a remainder of 88.
The number 6 becomes the next digit in our result. 
Result so far: 65101.536
Subtracting 4902 from 4990 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Going ahead to step 12:
If we divide 880 by 817, we get 1 and a remainder of 63.
Put 1 as the next digit of the answer. 
Result so far: 65101.5361
Subtract 817 from 880 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 13:
817 can be fit into 630 0 times, resulting in a remainder of 630.
The next digit of our result is 0. 
Result so far: 65101.5361
Subtract 0 from 630 to get 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Going ahead to step 14:
If we divide 6300 by 817, we get 7 and a remainder of 581.
Put 7 as the next digit of the answer. 
Result so far: 65101.536107
If we subtract 5719 from 6300, we get 581.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5810, and continue the process.

Advancing to step 15:
817 can be fit into 5810 7 times, resulting in a remainder of 91.
Write down 7 as next digit of the result. 
Result so far: 65101.5361077
The remainder is 91 after subtracting 5719 from 5810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

The final result is 65101.5361077 with a remainder of 9.1e-07.