574483 ÷ 21 
We're looking to find how many times 21 goes into 574483.

On to step 1:
When dividing 5 by 21, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 21

On to step 2:
The number 21 fits into 57 2 times, leaving a remainder of 15.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 42 away from 57, we end up with 15.
Fetch the next digit (4) from the dividend, attach it to 15 and continue: 154 / 21

Moving on to step 3:
When dividing 154 by 21, we get 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 27.0
If we subtract 147 from 154, we get 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 21

Step 4:
The number 21 fits into 74 3 times, leaving a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 273.0
If we subtract 63 from 74, we get 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 21

On to step 5:
When dividing 118 by 21, we get 5 with a remainder of 13.
The next digit of our result is 5. 
Result so far: 2735.0
Subtracting 105 from 118 leaves us with 13.
Include the next digit (3) from the dividend after 13, then repeat: 133 / 21

Going ahead to step 6:
133 divided by 21 is 6 with a remainder of 7.
Write down 6 as next digit of the result. 
Result so far: 27356.0
Subtract 126 from 133 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 7:
When dividing 70 by 21, we get 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 27356.3
If we subtract 63 from 70, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 8:
The number 21 fits into 70 3 times, leaving a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 27356.33
If we subtract 63 from 70, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 27356.33 with a remaining 0.007.