We look at the division of 521820 by 24 
We want to divide 521820 by 24.

On to step 1:
When dividing 5 by 24, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 24

Going ahead to step 2:
52 divided by 24 is 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 48 from 52 to get 4.
Take the next digit (1) from the dividend and append it to 4, then repeat: 41 / 24

Let's proceed to step 3:
24 goes into 41 1 times with a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 21.0
The remainder is 17 after subtracting 24 from 41.
Bring next digit (8) of the dividend behind the 17 and repeat the process: 178 / 24

Going ahead to step 4:
178 divided by 24 is 7 with a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 217.0
If we take 168 away from 178, we end up with 10.
Take the next digit (2) from the dividend and append it to 10, then repeat: 102 / 24

Step 5:
24 can be fit into 102 4 times, resulting in a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 2174.0
Subtracting 96 from 102 leaves us with 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 24

Let's proceed to step 6:
If we divide 60 by 24, we get 2 and a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 21742.0
If we take 48 away from 60, we end up 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.

Going ahead to step 7:
The number 24 fits into 120 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 21742.5
Subtract 120 from 120 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
24 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 21742.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
When dividing 0 by 24, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 21742.5
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 21742.5, and the remainder is 0.0.