Let's divide 658463 by 21
We want to figure out the number of times 658463 can be divided by 21.

On to step 1:
When dividing 6 by 21, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 21

Moving on to step 2:
21 can be fit into 65 3 times, resulting in a remainder of 2.
The next digit of our result is 3. 
Result so far: 3.0
If we take 63 away from 65, we end up with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 21

Let's proceed to step 3:
28 divided by 21 is 1 with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 31.0
Subtracting 21 from 28 leaves us with 7.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 21

Going ahead to step 4:
74 divided by 21 is 3 with a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 313.0
Deduct 63 from 74 and we're left with 11.
Include the next digit (6) from the dividend after 11, then repeat: 116 / 21

Step 5:
When dividing 116 by 21, we get 5 with a remainder of 11.
The next digit of our result is 5. 
Result so far: 3135.0
If we take 105 away from 116, we end up with 11.
Include the next digit (3) from the dividend after 11, then repeat: 113 / 21

Moving on to step 6:
The number 21 fits into 113 5 times, leaving a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 31355.0
Subtracting 105 from 113 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.

Let's proceed to step 7:
21 goes into 80 3 times with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 31355.3
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.

On to step 8:
21 can be fit into 170 8 times, resulting in a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 31355.38
Subtract 168 from 170 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
20 divided by 21 is 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 31355.38
Subtracting 0 from 20 leaves us 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.

Advancing to step 10:
200 divided by 21 is 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 31355.3809
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.

Advancing to step 11:
21 goes into 110 5 times with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 31355.38095
Subtracting 105 from 110 leaves us 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.
Write down 2 as next digit of the result. 
Result so far: 31355.380952
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.

Going ahead to step 13:
21 can be fit into 80 3 times, resulting in a remainder of 17.
The next digit of our result is 3. 
Result so far: 31355.3809523
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.

On to step 14:
170 divided by 21 is 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 31355.38095238
Deduct 168 from 170 and we're left 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.

In conclusion, the division gives 31355.38095238 with a balance of 2e-09.