Let's divide 810962 by 21
Our goal is to divide 810962 by 21.

Moving on to step 1:
The number 21 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 21

Let's proceed to step 2:
81 divided by 21 is 3 with a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 63 from 81 and we're left with 18.
Grab the next digit (0) from the dividend, add it to 18, then carry on: 180 / 21

Step 3:
When dividing 180 by 21, we get 8 with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 38.0
Deduct 168 from 180 and we're left with 12.
Fetch the next digit (9) from the dividend, attach it to 12 and continue: 129 / 21

Moving on to step 4:
129 divided by 21 is 6 with a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 386.0
If we subtract 126 from 129, we get 3.
Take the next digit (6) from the dividend and append it to 3, then repeat: 36 / 21

Step 5:
The number 21 fits into 36 1 times, leaving a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 3861.0
Subtracting 21 from 36 leaves us with 15.
Take the next digit (2) from the dividend and append it to 15, then repeat: 152 / 21

Advancing to step 6:
21 goes into 152 7 times with a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 38617.0
Deduct 147 from 152 and we're left 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 7:
When dividing 50 by 21, we get 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 38617.2
If we take 42 away from 50, we end up 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.

Advancing to step 8:
80 divided by 21 is 3 with a remainder of 17.
The next digit of our result is 3. 
Result so far: 38617.23
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 9:
21 goes into 170 8 times with a remainder of 2.
The next digit of our result is 8. 
Result so far: 38617.238
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.

Step 10:
21 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 38617.238
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 38617.23809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 12:
If we divide 110 by 21, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 38617.238095
The remainder is 5 after subtracting 105 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 13:
21 goes into 50 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 38617.2380952
If we subtract 42 from 50, 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 14:
80 divided by 21 is 3 with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 38617.23809523
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.

After the division, we end up with 38617.23809523 and a remainder of 1.7e-08.