655649 ÷ 21 
We want to figure out the number of times 655649 can be divided by 21.

Going ahead to step 1:
If we divide 6 by 21, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 21

Going ahead to step 2:
When dividing 65 by 21, we get 3 with a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 63 away from 65, we end up with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 21

Moving on to step 3:
When dividing 25 by 21, we get 1 with a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
The remainder is 4 after subtracting 21 from 25.
Include the next digit (6) from the dividend after 4, then repeat: 46 / 21

Advancing to step 4:
The number 21 fits into 46 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 312.0
If we take 42 away from 46, we end up with 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 21

On to step 5:
When dividing 44 by 21, we get 2 with a remainder of 2.
The next digit of our result is 2. 
Result so far: 3122.0
Subtracting 42 from 44 leaves us with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 21

Step 6:
21 can be fit into 29 1 times, resulting in a remainder of 8.
The next digit of our result is 1. 
Result so far: 31221.0
The remainder is 8 after subtracting 21 from 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
80 divided by 21 is 3 with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 31221.3
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 8:
When dividing 170 by 21, we get 8 with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 31221.38
Subtract 168 from 170 to 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.

Step 9:
20 divided by 21 is 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 31221.38
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.

Moving on to step 10:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 31221.3809
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.

Step 11:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 31221.38095
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 12:
21 goes into 50 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 31221.380952
If we subtract 42 from 50, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 13:
If we divide 80 by 21, we get 3 and a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 31221.3809523
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 14:
The number 21 fits into 170 8 times, leaving a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 31221.38095238
Subtracting 168 from 170 leaves us 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.

After the division, we end up with 31221.38095238 and a remainder of 2e-09.