We're dividing 21424759 by 516 
Let's see how many times 516 fits into 21424759.

Going ahead to step 1:
If we divide 2 by 516, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 516

Let's proceed to step 2:
516 can be fit into 21 0 times, resulting in a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Append the next digit (4) from the dividend to 21 and continue with: 214 / 516

On to step 3:
If we divide 214 by 516, we get 0 and a remainder of 214.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 214 leaves us with 214.
Take the next digit (2) from the dividend and append it to 214, then repeat: 2142 / 516

Step 4:
516 can be fit into 2142 4 times, resulting in a remainder of 78.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 2064 from 2142 to get 78.
Append the next digit (4) from the dividend to 78 and continue with: 784 / 516

On to step 5:
When dividing 784 by 516, we get 1 with a remainder of 268.
Write down 1 as next digit of the result. 
Result so far: 41.0
The remainder is 268 after subtracting 516 from 784.
Bring next digit (7) of the dividend behind the 268 and repeat the process: 2687 / 516

Moving on to step 6:
2687 divided by 516 is 5 with a remainder of 107.
Use 5 as the next digit of our solution. 
Result so far: 415.0
Subtract 2580 from 2687 to get 107.
Include the next digit (5) from the dividend after 107, then repeat: 1075 / 516

Let's proceed to step 7:
516 goes into 1075 2 times with a remainder of 43.
Write down 2 as next digit of the result. 
Result so far: 4152.0
If we take 1032 away from 1075, we end up with 43.
Grab the next digit (9) from the dividend, add it to 43, then carry on: 439 / 516

Let's proceed to step 8:
When dividing 439 by 516, we get 0 with a remainder of 439.
Write down 0 as next digit of the result. 
Result so far: 41520.0
Subtract 0 from 439 to get 439.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4390, and continue the process.

Step 9:
516 can be fit into 4390 8 times, resulting in a remainder of 262.
The next digit of our result is 8. 
Result so far: 41520.8
If we take 4128 away from 4390, we end up with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Going ahead to step 10:
516 goes into 2620 5 times with a remainder of 40.
The next digit of our result is 5. 
Result so far: 41520.85
If we take 2580 away from 2620, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
516 can be fit into 400 0 times, resulting in a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 41520.85
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 12:
516 goes into 4000 7 times with a remainder of 388.
Write down 7 as next digit of the result. 
Result so far: 41520.8507
Subtract 3612 from 4000 to get 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Moving on to step 13:
516 goes into 3880 7 times with a remainder of 268.
Put 7 as the next digit of the answer. 
Result so far: 41520.85077
Deduct 3612 from 3880 and we're left with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

The final outcome is 41520.85077, with a leftover of 0.000268.