We divide 322457 by 21
We're looking to find how many times 21 goes into 322457.

Moving on to step 1:
If we divide 3 by 21, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (2) from the dividend to 3 and continue with: 32 / 21

Step 2:
When dividing 32 by 21, we get 1 with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 21 from 32 leaves us with 11.
Include the next digit (2) from the dividend after 11, then repeat: 112 / 21

Going ahead to step 3:
If we divide 112 by 21, we get 5 and a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtracting 105 from 112 leaves us with 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 21

Let's proceed to step 4:
When dividing 74 by 21, we get 3 with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 153.0
Subtract 63 from 74 to get 11.
Grab the next digit (5) from the dividend, add it to 11, then carry on: 115 / 21

Step 5:
21 goes into 115 5 times with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 1535.0
The remainder is 10 after subtracting 105 from 115.
Fetch the next digit (7) from the dividend, attach it to 10 and continue: 107 / 21

Going ahead to step 6:
21 goes into 107 5 times with a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 15355.0
Subtracting 105 from 107 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.

Step 7:
If we divide 20 by 21, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 15355.0
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.

Step 8:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 15355.09
If we take 189 away from 200, we end up 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.

Advancing to step 9:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 15355.095
Deduct 105 from 110 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.

Advancing to step 10:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 15355.0952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 11:
If we divide 80 by 21, we get 3 and a remainder of 17.
The next digit of our result is 3. 
Result so far: 15355.09523
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 12:
When dividing 170 by 21, we get 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 15355.095238
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.

Going ahead to step 13:
When dividing 20 by 21, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 15355.095238
Deduct 0 from 20 and we're left 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.

Step 14:
If we divide 200 by 21, we get 9 and a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 15355.09523809
Subtracting 189 from 200 leaves us 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.

After the division, we end up with 15355.09523809 and a remainder of 1.1e-08.