8425360 divided by 660 
Our goal is to divide 8425360 by 660.

Moving on to step 1:
660 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 660

Let's proceed to step 2:
660 can be fit into 84 0 times, resulting in a remainder of 84.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 84, we get 84.
Append the next digit (2) from the dividend to 84 and continue with: 842 / 660

Going ahead to step 3:
842 divided by 660 is 1 with a remainder of 182.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 660 from 842 to get 182.
Bring next digit (5) of the dividend behind the 182 and repeat the process: 1825 / 660

Let's proceed to step 4:
660 goes into 1825 2 times with a remainder of 505.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 1320 from 1825, we get 505.
Fetch the next digit (3) from the dividend, attach it to 505 and continue: 5053 / 660

On to step 5:
660 can be fit into 5053 7 times, resulting in a remainder of 433.
Use 7 as the next digit of our solution. 
Result so far: 127.0
Subtract 4620 from 5053 to get 433.
Bring next digit (6) of the dividend behind the 433 and repeat the process: 4336 / 660

Let's proceed to step 6:
4336 divided by 660 is 6 with a remainder of 376.
Put 6 as the next digit of the answer. 
Result so far: 1276.0
Subtract 3960 from 4336 to get 376.
Take the next digit (0) from the dividend and append it to 376, then repeat: 3760 / 660

Step 7:
660 goes into 3760 5 times with a remainder of 460.
Write down 5 as next digit of the result. 
Result so far: 12765.0
If we subtract 3300 from 3760, we get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Going ahead to step 8:
660 goes into 4600 6 times with a remainder of 640.
Record the quotient 6 as the next digit in the result. 
Result so far: 12765.6
If we subtract 3960 from 4600, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Advancing to step 9:
The number 660 fits into 6400 9 times, leaving a remainder of 460.
The next digit of our result is 9. 
Result so far: 12765.69
Subtract 5940 from 6400 to get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Step 10:
660 can be fit into 4600 6 times, resulting in a remainder of 640.
The next digit of our result is 6. 
Result so far: 12765.696
Deduct 3960 from 4600 and we're left with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Step 11:
If we divide 6400 by 660, we get 9 and a remainder of 460.
Record the quotient 9 as the next digit in the result. 
Result so far: 12765.6969
Subtracting 5940 from 6400 leaves us with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Advancing to step 12:
660 goes into 4600 6 times with a remainder of 640.
Record the quotient 6 as the next digit in the result. 
Result so far: 12765.69696
The remainder is 640 after subtracting 3960 from 4600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Step 13:
When dividing 6400 by 660, we get 9 with a remainder of 460.
Write down 9 as next digit of the result. 
Result so far: 12765.696969
If we subtract 5940 from 6400, we get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Let's proceed to step 14:
The number 660 fits into 4600 6 times, leaving a remainder of 640.
The number 6 becomes the next digit in our result. 
Result so far: 12765.6969696
If we subtract 3960 from 4600, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Step 15:
The number 660 fits into 6400 9 times, leaving a remainder of 460.
Write down 9 as next digit of the result. 
Result so far: 12765.69696969
If we subtract 5940 from 6400, we get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

The final outcome is 12765.69696969, with a leftover of 4.6e-07.