We're dividing 12456681 by 660 
We want to divide 12456681 by 660.

Going ahead to step 1:
1 divided by 660 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 660

Moving on to step 2:
660 goes into 12 0 times with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 660

Moving on to step 3:
124 divided by 660 is 0 with a remainder of 124.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 124 leaves us with 124.
Bring next digit (5) of the dividend behind the 124 and repeat the process: 1245 / 660

On to step 4:
If we divide 1245 by 660, we get 1 and a remainder of 585.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 660 from 1245 leaves us with 585.
Fetch the next digit (6) from the dividend, attach it to 585 and continue: 5856 / 660

Moving on to step 5:
5856 divided by 660 is 8 with a remainder of 576.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtracting 5280 from 5856 leaves us with 576.
Append the next digit (6) from the dividend to 576 and continue with: 5766 / 660

Advancing to step 6:
When dividing 5766 by 660, we get 8 with a remainder of 486.
The next digit of our result is 8. 
Result so far: 188.0
If we subtract 5280 from 5766, we get 486.
Fetch the next digit (8) from the dividend, attach it to 486 and continue: 4868 / 660

Step 7:
660 can be fit into 4868 7 times, resulting in a remainder of 248.
The number 7 becomes the next digit in our result. 
Result so far: 1887.0
Subtracting 4620 from 4868 leaves us with 248.
Fetch the next digit (1) from the dividend, attach it to 248 and continue: 2481 / 660

Going ahead to step 8:
If we divide 2481 by 660, we get 3 and a remainder of 501.
Put 3 as the next digit of the answer. 
Result so far: 18873.0
The remainder is 501 after subtracting 1980 from 2481.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5010, and continue the process.

Let's proceed to step 9:
If we divide 5010 by 660, we get 7 and a remainder of 390.
Record the quotient 7 as the next digit in the result. 
Result so far: 18873.7
If we subtract 4620 from 5010, we get 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Going ahead to step 10:
660 can be fit into 3900 5 times, resulting in a remainder of 600.
The next digit of our result is 5. 
Result so far: 18873.75
Deduct 3300 from 3900 and we're left with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Step 11:
When dividing 6000 by 660, we get 9 with a remainder of 60.
The next digit of our result is 9. 
Result so far: 18873.759
Subtract 5940 from 6000 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 12:
660 goes into 600 0 times with a remainder of 600.
The next digit of our result is 0. 
Result so far: 18873.759
Deduct 0 from 600 and we're left with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Advancing to step 13:
When dividing 6000 by 660, we get 9 with a remainder of 60.
Use 9 as the next digit of our solution. 
Result so far: 18873.75909
Subtracting 5940 from 6000 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 14:
The number 660 fits into 600 0 times, leaving a remainder of 600.
The next digit of our result is 0. 
Result so far: 18873.75909
Subtract 0 from 600 to get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Let's proceed to step 15:
660 can be fit into 6000 9 times, resulting in a remainder of 60.
Write down 9 as next digit of the result. 
Result so far: 18873.7590909
Subtracting 5940 from 6000 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 16:
The number 660 fits into 600 0 times, leaving a remainder of 600.
Put 0 as the next digit of the answer. 
Result so far: 18873.7590909
If we take 0 away from 600, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

The final result is 18873.7590909 with a remainder of 6e-07.