We look at the division of 66580649 by 966 
Let's see how many times 966 fits into 66580649.

Advancing to step 1:
The number 966 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 966

On to step 2:
When dividing 66 by 966, we get 0 with a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Append the next digit (5) from the dividend to 66 and continue with: 665 / 966

Step 3:
If we divide 665 by 966, we get 0 and a remainder of 665.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 665 after subtracting 0 from 665.
Bring next digit (8) of the dividend behind the 665 and repeat the process: 6658 / 966

Step 4:
When dividing 6658 by 966, we get 6 with a remainder of 862.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 5796 from 6658 leaves us with 862.
Grab the next digit (0) from the dividend, add it to 862, then carry on: 8620 / 966

Moving on to step 5:
8620 divided by 966 is 8 with a remainder of 892.
Put 8 as the next digit of the answer. 
Result so far: 68.0
Deduct 7728 from 8620 and we're left with 892.
Append the next digit (6) from the dividend to 892 and continue with: 8926 / 966

Step 6:
The number 966 fits into 8926 9 times, leaving a remainder of 232.
Use 9 as the next digit of our solution. 
Result so far: 689.0
The remainder is 232 after subtracting 8694 from 8926.
Bring next digit (4) of the dividend behind the 232 and repeat the process: 2324 / 966

Moving on to step 7:
When dividing 2324 by 966, we get 2 with a remainder of 392.
Use 2 as the next digit of our solution. 
Result so far: 6892.0
Subtracting 1932 from 2324 leaves us with 392.
Bring next digit (9) of the dividend behind the 392 and repeat the process: 3929 / 966

Advancing to step 8:
The number 966 fits into 3929 4 times, leaving a remainder of 65.
Use 4 as the next digit of our solution. 
Result so far: 68924.0
If we subtract 3864 from 3929, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 9:
If we divide 650 by 966, we get 0 and a remainder of 650.
Record the quotient 0 as the next digit in the result. 
Result so far: 68924.0
If we take 0 away from 650, we end up with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Step 10:
966 can be fit into 6500 6 times, resulting in a remainder of 704.
The number 6 becomes the next digit in our result. 
Result so far: 68924.06
Subtracting 5796 from 6500 leaves us with 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Let's proceed to step 11:
If we divide 7040 by 966, we get 7 and a remainder of 278.
Write down 7 as next digit of the result. 
Result so far: 68924.067
Subtracting 6762 from 7040 leaves us with 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

On to step 12:
If we divide 2780 by 966, we get 2 and a remainder of 848.
The next digit of our result is 2. 
Result so far: 68924.0672
Deduct 1932 from 2780 and we're left with 848.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8480, and continue the process.

Let's proceed to step 13:
966 can be fit into 8480 8 times, resulting in a remainder of 752.
Record the quotient 8 as the next digit in the result. 
Result so far: 68924.06728
If we take 7728 away from 8480, we end up with 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Moving on to step 14:
966 goes into 7520 7 times with a remainder of 758.
Put 7 as the next digit of the answer. 
Result so far: 68924.067287
Subtract 6762 from 7520 to get 758.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7580, and continue the process.

Let's proceed to step 15:
If we divide 7580 by 966, we get 7 and a remainder of 818.
The next digit of our result is 7. 
Result so far: 68924.0672877
Subtract 6762 from 7580 to get 818.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8180, and continue the process.

The final result is 68924.0672877 with a remainder of 8.18e-06.