We look at the division of 53128183 by 399 
We're looking to find how many times 399 goes into 53128183.

Advancing to step 1:
399 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 399

Advancing to step 2:
The number 399 fits into 53 0 times, leaving a remainder of 53.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 53 and we're left with 53.
Include the next digit (1) from the dividend after 53, then repeat: 531 / 399

Going ahead to step 3:
531 divided by 399 is 1 with a remainder of 132.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 132 after subtracting 399 from 531.
Include the next digit (2) from the dividend after 132, then repeat: 1322 / 399

Let's proceed to step 4:
399 can be fit into 1322 3 times, resulting in a remainder of 125.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 1197 from 1322, we get 125.
Grab the next digit (8) from the dividend, add it to 125, then carry on: 1258 / 399

Advancing to step 5:
1258 divided by 399 is 3 with a remainder of 61.
Write down 3 as next digit of the result. 
Result so far: 133.0
Subtracting 1197 from 1258 leaves us with 61.
Grab the next digit (1) from the dividend, add it to 61, then carry on: 611 / 399

Advancing to step 6:
When dividing 611 by 399, we get 1 with a remainder of 212.
Put 1 as the next digit of the answer. 
Result so far: 1331.0
If we subtract 399 from 611, we get 212.
Grab the next digit (8) from the dividend, add it to 212, then carry on: 2128 / 399

Step 7:
If we divide 2128 by 399, we get 5 and a remainder of 133.
Write down 5 as next digit of the result. 
Result so far: 13315.0
The remainder is 133 after subtracting 1995 from 2128.
Fetch the next digit (3) from the dividend, attach it to 133 and continue: 1333 / 399

Step 8:
399 goes into 1333 3 times with a remainder of 136.
Write down 3 as next digit of the result. 
Result so far: 133153.0
Subtract 1197 from 1333 to get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Step 9:
If we divide 1360 by 399, we get 3 and a remainder of 163.
Record the quotient 3 as the next digit in the result. 
Result so far: 133153.3
If we subtract 1197 from 1360, we get 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

Moving on to step 10:
When dividing 1630 by 399, we get 4 with a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 133153.34
If we take 1596 away from 1630, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 11:
399 goes into 340 0 times with a remainder of 340.
Write down 0 as next digit of the result. 
Result so far: 133153.34
Subtracting 0 from 340 leaves us with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Going ahead to step 12:
If we divide 3400 by 399, we get 8 and a remainder of 208.
Use 8 as the next digit of our solution. 
Result so far: 133153.3408
The remainder is 208 after subtracting 3192 from 3400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Let's proceed to step 13:
When dividing 2080 by 399, we get 5 with a remainder of 85.
The next digit of our result is 5. 
Result so far: 133153.34085
Deduct 1995 from 2080 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 14:
850 divided by 399 is 2 with a remainder of 52.
Record the quotient 2 as the next digit in the result. 
Result so far: 133153.340852
Subtract 798 from 850 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 15:
520 divided by 399 is 1 with a remainder of 121.
The number 1 becomes the next digit in our result. 
Result so far: 133153.3408521
Deduct 399 from 520 and we're left with 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

On to step 16:
399 goes into 1210 3 times with a remainder of 13.
Write down 3 as next digit of the result. 
Result so far: 133153.34085213
Deduct 1197 from 1210 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

In conclusion, the division gives 133153.34085213 with a balance of 1.3e-08.