We look at the division of 16100855 by 521 
Let's see how many times 521 fits into 16100855.

Going ahead to step 1:
If we divide 1 by 521, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 521

Let's proceed to step 2:
If we divide 16 by 521, we get 0 and a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Take the next digit (1) from the dividend and append it to 16, then repeat: 161 / 521

On to step 3:
521 goes into 161 0 times with a remainder of 161.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 161, we end up with 161.
Append the next digit (0) from the dividend to 161 and continue with: 1610 / 521

Moving on to step 4:
521 can be fit into 1610 3 times, resulting in a remainder of 47.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 47 after subtracting 1563 from 1610.
Grab the next digit (0) from the dividend, add it to 47, then carry on: 470 / 521

Going ahead to step 5:
The number 521 fits into 470 0 times, leaving a remainder of 470.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
If we subtract 0 from 470, we get 470.
Include the next digit (8) from the dividend after 470, then repeat: 4708 / 521

Advancing to step 6:
The number 521 fits into 4708 9 times, leaving a remainder of 19.
Put 9 as the next digit of the answer. 
Result so far: 309.0
If we take 4689 away from 4708, we end up with 19.
Fetch the next digit (5) from the dividend, attach it to 19 and continue: 195 / 521

On to step 7:
The number 521 fits into 195 0 times, leaving a remainder of 195.
The number 0 becomes the next digit in our result. 
Result so far: 3090.0
Deduct 0 from 195 and we're left with 195.
Grab the next digit (5) from the dividend, add it to 195, then carry on: 1955 / 521

Step 8:
1955 divided by 521 is 3 with a remainder of 392.
Put 3 as the next digit of the answer. 
Result so far: 30903.0
Deduct 1563 from 1955 and we're left with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Going ahead to step 9:
521 goes into 3920 7 times with a remainder of 273.
Record the quotient 7 as the next digit in the result. 
Result so far: 30903.7
The remainder is 273 after subtracting 3647 from 3920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Going ahead to step 10:
When dividing 2730 by 521, we get 5 with a remainder of 125.
Put 5 as the next digit of the answer. 
Result so far: 30903.75
If we take 2605 away from 2730, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Let's proceed to step 11:
1250 divided by 521 is 2 with a remainder of 208.
Put 2 as the next digit of the answer. 
Result so far: 30903.752
If we take 1042 away from 1250, we end up with 208.
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 12:
2080 divided by 521 is 3 with a remainder of 517.
Put 3 as the next digit of the answer. 
Result so far: 30903.7523
Subtracting 1563 from 2080 leaves us with 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Let's proceed to step 13:
If we divide 5170 by 521, we get 9 and a remainder of 481.
Write down 9 as next digit of the result. 
Result so far: 30903.75239
If we take 4689 away from 5170, we end up with 481.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4810, and continue the process.

Let's proceed to step 14:
If we divide 4810 by 521, we get 9 and a remainder of 121.
The number 9 becomes the next digit in our result. 
Result so far: 30903.752399
If we subtract 4689 from 4810, we get 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

In conclusion, the division gives 30903.752399 with a balance of 1.21e-05.