Let's divide 516426 by 21
Our goal is to divide 516426 by 21.

Let's proceed to step 1:
21 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 21

Advancing to step 2:
51 divided by 21 is 2 with 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.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 21

On to step 3:
If we divide 96 by 21, we get 4 and a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 24.0
Subtract 84 from 96 to get 12.
Take the next digit (4) from the dividend and append it to 12, then repeat: 124 / 21

On to step 4:
When dividing 124 by 21, we get 5 with a remainder of 19.
The number 5 becomes the next digit in our result. 
Result so far: 245.0
The remainder is 19 after subtracting 105 from 124.
Grab the next digit (2) from the dividend, add it to 19, then carry on: 192 / 21

Step 5:
21 goes into 192 9 times with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 2459.0
The remainder is 3 after subtracting 189 from 192.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 21

Moving on to step 6:
21 can be fit into 36 1 times, resulting in a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 24591.0
The remainder is 15 after subtracting 21 from 36.
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 7:
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: 24591.7
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.

Step 8:
21 goes into 30 1 times with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 24591.71
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 9:
When dividing 90 by 21, we get 4 with a remainder of 6.
The next digit of our result is 4. 
Result so far: 24591.714
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 10:
If we divide 60 by 21, we get 2 and a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 24591.7142
Deduct 42 from 60 and we're left 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.

Going ahead 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: 24591.71428
Deduct 168 from 180 and we're left with 12.
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:
120 divided by 21 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 24591.714285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 13:
150 divided by 21 is 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 24591.7142857
Subtracting 147 from 150 leaves us 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 next digit of our result is 1. 
Result so far: 24591.71428571
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.

In conclusion, the division gives 24591.71428571 with a balance of 9e-09.