814136 divided by 21 
Our goal is to divide 814136 by 21.

On to step 1:
21 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 21

Going ahead to step 2:
21 can be fit into 81 3 times, resulting in a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 63 from 81 to get 18.
Bring next digit (4) of the dividend behind the 18 and repeat the process: 184 / 21

Moving on to step 3:
21 can be fit into 184 8 times, resulting in a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
If we subtract 168 from 184, we get 16.
Grab the next digit (1) from the dividend, add it to 16, then carry on: 161 / 21

Step 4:
161 divided by 21 is 7 with a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 387.0
If we take 147 away from 161, we end up with 14.
Bring next digit (3) of the dividend behind the 14 and repeat the process: 143 / 21

Moving on to step 5:
21 goes into 143 6 times with a remainder of 17.
The number 6 becomes the next digit in our result. 
Result so far: 3876.0
Subtract 126 from 143 to get 17.
Grab the next digit (6) from the dividend, add it to 17, then carry on: 176 / 21

Going ahead to step 6:
21 goes into 176 8 times with a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 38768.0
If we subtract 168 from 176, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 38768.3
Deduct 63 from 80 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 8:
When dividing 170 by 21, we get 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 38768.38
Subtracting 168 from 170 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
The number 21 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 38768.38
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
200 divided by 21 is 9 with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 38768.3809
Deduct 189 from 200 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 11:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 38768.38095
If we take 105 away from 110, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 12:
21 can be fit into 50 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 38768.380952
Subtracting 42 from 50 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 13:
The number 21 fits into 80 3 times, leaving a remainder of 17.
The next digit of our result is 3. 
Result so far: 38768.3809523
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 14:
21 goes into 170 8 times with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 38768.38095238
If we take 168 away from 170, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 38768.38095238 with a remainder of 2e-09.