We're dividing 660621 by 23 
We're looking to find how many times 23 goes into 660621.

Going ahead to step 1:
The number 23 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 23

Let's proceed to step 2:
The number 23 fits into 66 2 times, leaving a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 46 away from 66, we end up with 20.
Bring next digit (0) of the dividend behind the 20 and repeat the process: 200 / 23

Advancing to step 3:
When dividing 200 by 23, we get 8 with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 28.0
Subtracting 184 from 200 leaves us with 16.
Bring next digit (6) of the dividend behind the 16 and repeat the process: 166 / 23

Going ahead to step 4:
23 goes into 166 7 times with a remainder of 5.
The next digit of our result is 7. 
Result so far: 287.0
Deduct 161 from 166 and we're left with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 23

Advancing to step 5:
52 divided by 23 is 2 with a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 2872.0
Subtract 46 from 52 to get 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 23

Moving on to step 6:
If we divide 61 by 23, we get 2 and a remainder of 15.
Record the quotient 2 as the next digit in the result. 
Result so far: 28722.0
Subtracting 46 from 61 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
23 goes into 150 6 times with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 28722.6
The remainder is 12 after subtracting 138 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 8:
23 goes into 120 5 times with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 28722.65
If we take 115 away from 120, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
50 divided by 23 is 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 28722.652
Deduct 46 from 50 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.

Step 10:
If we divide 40 by 23, we get 1 and a remainder of 17.
The next digit of our result is 1. 
Result so far: 28722.6521
The remainder is 17 after subtracting 23 from 40.
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 11:
23 goes into 170 7 times with a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 28722.65217
Deduct 161 from 170 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.

Advancing to step 12:
23 can be fit into 90 3 times, resulting in a remainder of 21.
Use 3 as the next digit of our solution. 
Result so far: 28722.652173
The remainder is 21 after subtracting 69 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 13:
210 divided by 23 is 9 with a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 28722.6521739
The remainder is 3 after subtracting 207 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 14:
If we divide 30 by 23, we get 1 and a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 28722.65217391
Subtract 23 from 30 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

In conclusion, the division gives 28722.65217391 with a balance of 7e-09.