686630 ÷ 23 
Let's see how many times 23 fits into 686630.

Advancing 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
If we subtract 0 from 6, we get 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 23

Moving on to step 2:
The number 23 fits into 68 2 times, leaving a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 22 after subtracting 46 from 68.
Take the next digit (6) from the dividend and append it to 22, then repeat: 226 / 23

Going ahead to step 3:
When dividing 226 by 23, we get 9 with a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
Subtract 207 from 226 to get 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 23

Moving on to step 4:
196 divided by 23 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 298.0
The remainder is 12 after subtracting 184 from 196.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 23

Advancing to step 5:
23 goes into 123 5 times with a remainder of 8.
The next digit of our result is 5. 
Result so far: 2985.0
Subtracting 115 from 123 leaves us with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 23

Moving on to step 6:
The number 23 fits into 80 3 times, leaving a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 29853.0
If we take 69 away from 80, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 7:
The number 23 fits into 110 4 times, leaving a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 29853.4
If we subtract 92 from 110, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 8:
If we divide 180 by 23, we get 7 and a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 29853.47
Deduct 161 from 180 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 9:
If we divide 190 by 23, we get 8 and a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 29853.478
If we take 184 away from 190, 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 10:
If we divide 60 by 23, we get 2 and a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 29853.4782
If we subtract 46 from 60, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 11:
When dividing 140 by 23, we get 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 29853.47826
Subtract 138 from 140 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.

Let's proceed to step 12:
23 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 29853.47826
Subtracting 0 from 20 leaves us 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.

Advancing to step 13:
23 goes into 200 8 times with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 29853.4782608
Subtract 184 from 200 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 14:
When dividing 160 by 23, we get 6 with a remainder of 22.
Record the quotient 6 as the next digit in the result. 
Result so far: 29853.47826086
If we take 138 away from 160, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final outcome is 29853.47826086, with a leftover of 2.2e-08.