21225816 divided by 813 
Our goal is to divide 21225816 by 813.

Let's proceed to step 1:
The number 813 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 813

Advancing to step 2:
The number 813 fits into 21 0 times, leaving a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (2) from the dividend, add it to 21, then carry on: 212 / 813

Advancing to step 3:
If we divide 212 by 813, we get 0 and a remainder of 212.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 212, we get 212.
Grab the next digit (2) from the dividend, add it to 212, then carry on: 2122 / 813

Moving on to step 4:
The number 813 fits into 2122 2 times, leaving a remainder of 496.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 1626 away from 2122, we end up with 496.
Include the next digit (5) from the dividend after 496, then repeat: 4965 / 813

On to step 5:
If we divide 4965 by 813, we get 6 and a remainder of 87.
Use 6 as the next digit of our solution. 
Result so far: 26.0
Deduct 4878 from 4965 and we're left with 87.
Include the next digit (8) from the dividend after 87, then repeat: 878 / 813

Advancing to step 6:
878 divided by 813 is 1 with a remainder of 65.
The number 1 becomes the next digit in our result. 
Result so far: 261.0
Deduct 813 from 878 and we're left with 65.
Grab the next digit (1) from the dividend, add it to 65, then carry on: 651 / 813

On to step 7:
If we divide 651 by 813, we get 0 and a remainder of 651.
Write down 0 as next digit of the result. 
Result so far: 2610.0
Deduct 0 from 651 and we're left with 651.
Include the next digit (6) from the dividend after 651, then repeat: 6516 / 813

On to step 8:
The number 813 fits into 6516 8 times, leaving a remainder of 12.
The next digit of our result is 8. 
Result so far: 26108.0
If we subtract 6504 from 6516, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
The number 813 fits into 120 0 times, leaving a remainder of 120.
Use 0 as the next digit of our solution. 
Result so far: 26108.0
Deduct 0 from 120 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 10:
813 can be fit into 1200 1 times, resulting in a remainder of 387.
The next digit of our result is 1. 
Result so far: 26108.01
The remainder is 387 after subtracting 813 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Step 11:
When dividing 3870 by 813, we get 4 with a remainder of 618.
Write down 4 as next digit of the result. 
Result so far: 26108.014
Deduct 3252 from 3870 and we're left with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Let's proceed to step 12:
The number 813 fits into 6180 7 times, leaving a remainder of 489.
The number 7 becomes the next digit in our result. 
Result so far: 26108.0147
Deduct 5691 from 6180 and we're left with 489.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4890, and continue the process.

Moving on to step 13:
813 can be fit into 4890 6 times, resulting in a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 26108.01476
The remainder is 12 after subtracting 4878 from 4890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 14:
The number 813 fits into 120 0 times, leaving a remainder of 120.
Write down 0 as next digit of the result. 
Result so far: 26108.01476
Subtracting 0 from 120 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 15:
813 goes into 1200 1 times with a remainder of 387.
The number 1 becomes the next digit in our result. 
Result so far: 26108.0147601
The remainder is 387 after subtracting 813 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Advancing to step 16:
813 goes into 3870 4 times with a remainder of 618.
Write down 4 as next digit of the result. 
Result so far: 26108.01476014
Subtract 3252 from 3870 to get 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

The final result is 26108.01476014 with a remainder of 6.18e-07.