576053 divided by 21 
Let's see how many times 21 fits into 576053.

Advancing to step 1:
5 divided by 21 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 21

Step 2:
21 can be fit into 57 2 times, resulting in a remainder of 15.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 42 away from 57, we end up with 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 21

Let's proceed to step 3:
When dividing 156 by 21, we get 7 with a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
If we subtract 147 from 156, we get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 21

Going ahead to step 4:
If we divide 90 by 21, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 274.0
If we take 84 away from 90, we end up with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 21

Going ahead to step 5:
When dividing 65 by 21, we get 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 2743.0
Deduct 63 from 65 and we're left with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 21

Going ahead to step 6:
21 can be fit into 23 1 times, resulting in a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 27431.0
If we take 21 away from 23, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
The number 21 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 27431.0
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
21 can be fit into 200 9 times, resulting in a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 27431.09
Deduct 189 from 200 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 9:
110 divided by 21 is 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 27431.095
Subtract 105 from 110 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
21 goes into 50 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 27431.0952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 11:
80 divided by 21 is 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 27431.09523
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 12:
21 can be fit into 170 8 times, resulting in a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 27431.095238
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
20 divided by 21 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 27431.095238
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 14:
If we divide 200 by 21, we get 9 and a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 27431.09523809
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final result is 27431.09523809 with a remainder of 1.1e-08.