We look at the division of 66307815 by 396 
Let's see how many times 396 fits into 66307815.

Moving on to step 1:
When dividing 6 by 396, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 396

Advancing to step 2:
396 can be fit into 66 0 times, resulting in a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Bring next digit (3) of the dividend behind the 66 and repeat the process: 663 / 396

Going ahead to step 3:
396 goes into 663 1 times with a remainder of 267.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 396 from 663 and we're left with 267.
Take the next digit (0) from the dividend and append it to 267, then repeat: 2670 / 396

Advancing to step 4:
The number 396 fits into 2670 6 times, leaving a remainder of 294.
Put 6 as the next digit of the answer. 
Result so far: 16.0
The remainder is 294 after subtracting 2376 from 2670.
Include the next digit (7) from the dividend after 294, then repeat: 2947 / 396

Let's proceed to step 5:
If we divide 2947 by 396, we get 7 and a remainder of 175.
Use 7 as the next digit of our solution. 
Result so far: 167.0
The remainder is 175 after subtracting 2772 from 2947.
Include the next digit (8) from the dividend after 175, then repeat: 1758 / 396

Step 6:
The number 396 fits into 1758 4 times, leaving a remainder of 174.
The next digit of our result is 4. 
Result so far: 1674.0
Subtract 1584 from 1758 to get 174.
Grab the next digit (1) from the dividend, add it to 174, then carry on: 1741 / 396

Step 7:
When dividing 1741 by 396, we get 4 with a remainder of 157.
Put 4 as the next digit of the answer. 
Result so far: 16744.0
Subtracting 1584 from 1741 leaves us with 157.
Bring next digit (5) of the dividend behind the 157 and repeat the process: 1575 / 396

Let's proceed to step 8:
1575 divided by 396 is 3 with a remainder of 387.
The number 3 becomes the next digit in our result. 
Result so far: 167443.0
If we take 1188 away from 1575, we end up with 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Moving on to step 9:
If we divide 3870 by 396, we get 9 and a remainder of 306.
Write down 9 as next digit of the result. 
Result so far: 167443.9
If we subtract 3564 from 3870, we get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Moving on to step 10:
The number 396 fits into 3060 7 times, leaving a remainder of 288.
Put 7 as the next digit of the answer. 
Result so far: 167443.97
Subtracting 2772 from 3060 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Advancing to step 11:
If we divide 2880 by 396, we get 7 and a remainder of 108.
The number 7 becomes the next digit in our result. 
Result so far: 167443.977
Subtract 2772 from 2880 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

After the division, we end up with 167443.977 and a remainder of 0.0108.