Let's divide 21117787 by 556
Our goal is to divide 21117787 by 556.

Going ahead to step 1:
If we divide 2 by 556, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 556

Moving on to step 2:
556 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Include the next digit (1) from the dividend after 21, then repeat: 211 / 556

Let's proceed to step 3:
When dividing 211 by 556, we get 0 with a remainder of 211.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 211, we get 211.
Include the next digit (1) from the dividend after 211, then repeat: 2111 / 556

Let's proceed to step 4:
2111 divided by 556 is 3 with a remainder of 443.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 443 after subtracting 1668 from 2111.
Grab the next digit (7) from the dividend, add it to 443, then carry on: 4437 / 556

On to step 5:
When dividing 4437 by 556, we get 7 with a remainder of 545.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
The remainder is 545 after subtracting 3892 from 4437.
Include the next digit (7) from the dividend after 545, then repeat: 5457 / 556

On to step 6:
556 can be fit into 5457 9 times, resulting in a remainder of 453.
Put 9 as the next digit of the answer. 
Result so far: 379.0
Subtracting 5004 from 5457 leaves us with 453.
Grab the next digit (8) from the dividend, add it to 453, then carry on: 4538 / 556

Moving on to step 7:
556 goes into 4538 8 times with a remainder of 90.
The number 8 becomes the next digit in our result. 
Result so far: 3798.0
If we subtract 4448 from 4538, we get 90.
Append the next digit (7) from the dividend to 90 and continue with: 907 / 556

On to step 8:
If we divide 907 by 556, we get 1 and a remainder of 351.
The number 1 becomes the next digit in our result. 
Result so far: 37981.0
If we subtract 556 from 907, we get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Let's proceed to step 9:
When dividing 3510 by 556, we get 6 with a remainder of 174.
Write down 6 as next digit of the result. 
Result so far: 37981.6
If we subtract 3336 from 3510, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

On to step 10:
1740 divided by 556 is 3 with a remainder of 72.
Write down 3 as next digit of the result. 
Result so far: 37981.63
If we subtract 1668 from 1740, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 11:
556 can be fit into 720 1 times, resulting in a remainder of 164.
The next digit of our result is 1. 
Result so far: 37981.631
The remainder is 164 after subtracting 556 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Step 12:
The number 556 fits into 1640 2 times, leaving a remainder of 528.
The number 2 becomes the next digit in our result. 
Result so far: 37981.6312
If we subtract 1112 from 1640, we get 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Let's proceed to step 13:
When dividing 5280 by 556, we get 9 with a remainder of 276.
Write down 9 as next digit of the result. 
Result so far: 37981.63129
If we take 5004 away from 5280, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Moving on to step 14:
The number 556 fits into 2760 4 times, leaving a remainder of 536.
Record the quotient 4 as the next digit in the result. 
Result so far: 37981.631294
The remainder is 536 after subtracting 2224 from 2760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Advancing to step 15:
5360 divided by 556 is 9 with a remainder of 356.
The number 9 becomes the next digit in our result. 
Result so far: 37981.6312949
Subtracting 5004 from 5360 leaves us with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Going ahead to step 16:
The number 556 fits into 3560 6 times, leaving a remainder of 224.
Put 6 as the next digit of the answer. 
Result so far: 37981.63129496
Deduct 3336 from 3560 and we're left with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

The final outcome is 37981.63129496, with a leftover of 2.24e-07.