652923 divided by 21 
We're looking to find how many times 21 goes into 652923.

Advancing to step 1:
When dividing 6 by 21, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 21

Step 2:
The number 21 fits into 65 3 times, leaving a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 63 from 65, we get 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 21

Going ahead to step 3:
If we divide 22 by 21, we get 1 and a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 31.0
Subtract 21 from 22 to get 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 21

Step 4:
21 can be fit into 19 0 times, resulting in a remainder of 19.
The next digit of our result is 0. 
Result so far: 310.0
Subtracting 0 from 19 leaves us with 19.
Grab the next digit (2) from the dividend, add it to 19, then carry on: 192 / 21

On to step 5:
If we divide 192 by 21, we get 9 and a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 3109.0
If we subtract 189 from 192, we get 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 21

Moving on to step 6:
21 can be fit into 33 1 times, resulting in a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 31091.0
If we subtract 21 from 33, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
The number 21 fits into 120 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 31091.5
Subtract 105 from 120 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 8:
21 goes into 150 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 31091.57
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.

Let's proceed to step 9:
When dividing 30 by 21, we get 1 with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 31091.571
Subtracting 21 from 30 leaves us 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.

Let's proceed to step 10:
The number 21 fits into 90 4 times, leaving a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 31091.5714
If we take 84 away from 90, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 11:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 31091.57142
Deduct 42 from 60 and we're left 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.

On to step 12:
21 can be fit into 180 8 times, resulting in a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 31091.571428
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 13:
21 can be fit into 120 5 times, resulting in a remainder of 15.
The next digit of our result is 5. 
Result so far: 31091.5714285
Subtract 105 from 120 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 14:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 31091.57142857
Subtracting 147 from 150 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final result is 31091.57142857 with a remainder of 3e-09.