575605 ÷ 21 
We're looking to find how many times 21 goes into 575605.

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
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:
When dividing 57 by 21, we get 2 with a remainder of 15.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 42 from 57 leaves us with 15.
Append the next digit (5) from the dividend to 15 and continue with: 155 / 21

Step 3:
If we divide 155 by 21, we get 7 and a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 27.0
Subtracting 147 from 155 leaves us with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 21

Step 4:
If we divide 86 by 21, we get 4 and a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 274.0
Deduct 84 from 86 and we're left with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 21

On to step 5:
If we divide 20 by 21, we get 0 and a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 2740.0
Subtracting 0 from 20 leaves us with 20.
Grab the next digit (5) from the dividend, add it to 20, then carry on: 205 / 21

Let's proceed to step 6:
The number 21 fits into 205 9 times, leaving a remainder of 16.
The next digit of our result is 9. 
Result so far: 27409.0
If we take 189 away from 205, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 7:
160 divided by 21 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 27409.7
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 8:
When dividing 130 by 21, we get 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 27409.76
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
40 divided by 21 is 1 with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 27409.761
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 10:
The number 21 fits into 190 9 times, leaving a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 27409.7619
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 11:
The number 21 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 27409.7619
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 27409.761904
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 13:
160 divided by 21 is 7 with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 27409.7619047
Subtracting 147 from 160 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 14:
130 divided by 21 is 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 27409.76190476
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 27409.76190476 with a remainder of 4e-09.