607575 ÷ 21 
We want to figure out the number of times 607575 can be divided by 21.

Moving on to step 1:
The number 21 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 21

Going ahead to step 2:
21 can be fit into 60 2 times, resulting in a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 42 away from 60, we end up with 18.
Fetch the next digit (7) from the dividend, attach it to 18 and continue: 187 / 21

Moving on to step 3:
The number 21 fits into 187 8 times, leaving a remainder of 19.
Write down 8 as next digit of the result. 
Result so far: 28.0
Deduct 168 from 187 and we're left with 19.
Bring next digit (5) of the dividend behind the 19 and repeat the process: 195 / 21

On to step 4:
195 divided by 21 is 9 with a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 289.0
If we subtract 189 from 195, we get 6.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 21

Going ahead to step 5:
67 divided by 21 is 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 2893.0
If we subtract 63 from 67, we get 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 21

Going ahead to step 6:
21 can be fit into 45 2 times, resulting in a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 28932.0
The remainder is 3 after subtracting 42 from 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
21 goes into 30 1 times with a remainder of 9.
The next digit of our result is 1. 
Result so far: 28932.1
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 8:
The number 21 fits into 90 4 times, leaving a remainder of 6.
The next digit of our result is 4. 
Result so far: 28932.14
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
21 goes into 60 2 times with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 28932.142
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 10:
When dividing 180 by 21, we get 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 28932.1428
The remainder is 12 after subtracting 168 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
120 divided by 21 is 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 28932.14285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 12:
If we divide 150 by 21, we get 7 and a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 28932.142857
If we subtract 147 from 150, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 13:
If we divide 30 by 21, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 28932.1428571
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 14:
21 can be fit into 90 4 times, resulting in a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 28932.14285714
Subtract 84 from 90 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The quotient of the division is 28932.14285714, and the remainder is 6e-09.