Let's divide 53715257 by 321
We want to divide 53715257 by 321.

On to step 1:
When dividing 5 by 321, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 321

Step 2:
The number 321 fits into 53 0 times, leaving a remainder of 53.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 53 to get 53.
Take the next digit (7) from the dividend and append it to 53, then repeat: 537 / 321

Advancing to step 3:
321 can be fit into 537 1 times, resulting in a remainder of 216.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 216 after subtracting 321 from 537.
Bring next digit (1) of the dividend behind the 216 and repeat the process: 2161 / 321

Step 4:
When dividing 2161 by 321, we get 6 with a remainder of 235.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Deduct 1926 from 2161 and we're left with 235.
Take the next digit (5) from the dividend and append it to 235, then repeat: 2355 / 321

Moving on to step 5:
When dividing 2355 by 321, we get 7 with a remainder of 108.
Put 7 as the next digit of the answer. 
Result so far: 167.0
If we take 2247 away from 2355, we end up with 108.
Append the next digit (2) from the dividend to 108 and continue with: 1082 / 321

Going ahead to step 6:
1082 divided by 321 is 3 with a remainder of 119.
Record the quotient 3 as the next digit in the result. 
Result so far: 1673.0
The remainder is 119 after subtracting 963 from 1082.
Include the next digit (5) from the dividend after 119, then repeat: 1195 / 321

Step 7:
321 goes into 1195 3 times with a remainder of 232.
Put 3 as the next digit of the answer. 
Result so far: 16733.0
If we subtract 963 from 1195, we get 232.
Fetch the next digit (7) from the dividend, attach it to 232 and continue: 2327 / 321

Moving on to step 8:
If we divide 2327 by 321, we get 7 and a remainder of 80.
The number 7 becomes the next digit in our result. 
Result so far: 167337.0
Deduct 2247 from 2327 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 9:
321 can be fit into 800 2 times, resulting in a remainder of 158.
Write down 2 as next digit of the result. 
Result so far: 167337.2
If we subtract 642 from 800, we get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Advancing to step 10:
When dividing 1580 by 321, we get 4 with a remainder of 296.
Record the quotient 4 as the next digit in the result. 
Result so far: 167337.24
Deduct 1284 from 1580 and we're left with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

On to step 11:
When dividing 2960 by 321, we get 9 with a remainder of 71.
Write down 9 as next digit of the result. 
Result so far: 167337.249
Deduct 2889 from 2960 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 12:
710 divided by 321 is 2 with a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 167337.2492
Subtracting 642 from 710 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 13:
The number 321 fits into 680 2 times, leaving a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 167337.24922
Subtracting 642 from 680 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final outcome is 167337.24922, with a leftover of 3.8e-05.