We divide 514956 by 21
We want to figure out the number of times 514956 can be divided by 21.

Going ahead to step 1:
5 divided by 21 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 21

Going ahead to step 2:
If we divide 51 by 21, we get 2 and a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 42 from 51 and we're left with 9.
Bring next digit (4) of the dividend behind the 9 and repeat the process: 94 / 21

On to step 3:
21 can be fit into 94 4 times, resulting in a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
If we take 84 away from 94, we end up with 10.
Grab the next digit (9) from the dividend, add it to 10, then carry on: 109 / 21

On to step 4:
If we divide 109 by 21, we get 5 and a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 245.0
If we subtract 105 from 109, we get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 21

Step 5:
21 goes into 45 2 times with a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 2452.0
Subtracting 42 from 45 leaves us with 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 21

Moving on to step 6:
21 can be fit into 36 1 times, resulting in a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 24521.0
Subtracting 21 from 36 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 7:
150 divided by 21 is 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 24521.7
If we take 147 away from 150, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 8:
If we divide 30 by 21, we get 1 and a remainder of 9.
The next digit of our result is 1. 
Result so far: 24521.71
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 9:
21 can be fit into 90 4 times, resulting in a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 24521.714
Subtracting 84 from 90 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 10:
If we divide 60 by 21, we get 2 and a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 24521.7142
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 11:
21 goes into 180 8 times with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 24521.71428
The remainder is 12 after subtracting 168 from 180.
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 12:
21 goes into 120 5 times with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 24521.714285
If we subtract 105 from 120, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 13:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 24521.7142857
If we take 147 away from 150, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 14:
30 divided by 21 is 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 24521.71428571
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The final outcome is 24521.71428571, with a leftover of 9e-09.