We're dividing 66919887 by 815 
Let's see how many times 815 fits into 66919887.

Step 1:
If we divide 6 by 815, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 815

Advancing to step 2:
815 can be fit into 66 0 times, resulting in a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Append the next digit (9) from the dividend to 66 and continue with: 669 / 815

Going ahead to step 3:
815 goes into 669 0 times with a remainder of 669.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 669 and we're left with 669.
Grab the next digit (1) from the dividend, add it to 669, then carry on: 6691 / 815

On to step 4:
The number 815 fits into 6691 8 times, leaving a remainder of 171.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 171 after subtracting 6520 from 6691.
Take the next digit (9) from the dividend and append it to 171, then repeat: 1719 / 815

Moving on to step 5:
The number 815 fits into 1719 2 times, leaving a remainder of 89.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
Subtracting 1630 from 1719 leaves us with 89.
Grab the next digit (8) from the dividend, add it to 89, then carry on: 898 / 815

On to step 6:
If we divide 898 by 815, we get 1 and a remainder of 83.
The number 1 becomes the next digit in our result. 
Result so far: 821.0
Subtract 815 from 898 to get 83.
Include the next digit (8) from the dividend after 83, then repeat: 838 / 815

Going ahead to step 7:
The number 815 fits into 838 1 times, leaving a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 8211.0
Subtracting 815 from 838 leaves us with 23.
Grab the next digit (7) from the dividend, add it to 23, then carry on: 237 / 815

Moving on to step 8:
815 can be fit into 237 0 times, resulting in a remainder of 237.
Put 0 as the next digit of the answer. 
Result so far: 82110.0
If we subtract 0 from 237, we get 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Advancing to step 9:
When dividing 2370 by 815, we get 2 with a remainder of 740.
Put 2 as the next digit of the answer. 
Result so far: 82110.2
The remainder is 740 after subtracting 1630 from 2370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

Advancing to step 10:
7400 divided by 815 is 9 with a remainder of 65.
Put 9 as the next digit of the answer. 
Result so far: 82110.29
Subtracting 7335 from 7400 leaves us with 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 11:
The number 815 fits into 650 0 times, leaving a remainder of 650.
Record the quotient 0 as the next digit in the result. 
Result so far: 82110.29
Subtract 0 from 650 to get 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Let's proceed to step 12:
If we divide 6500 by 815, we get 7 and a remainder of 795.
Put 7 as the next digit of the answer. 
Result so far: 82110.2907
Subtracting 5705 from 6500 leaves us with 795.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7950, and continue the process.

Step 13:
815 goes into 7950 9 times with a remainder of 615.
Use 9 as the next digit of our solution. 
Result so far: 82110.29079
Deduct 7335 from 7950 and we're left with 615.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6150, and continue the process.

Going ahead to step 14:
815 goes into 6150 7 times with a remainder of 445.
Put 7 as the next digit of the answer. 
Result so far: 82110.290797
Subtracting 5705 from 6150 leaves us with 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Let's proceed to step 15:
If we divide 4450 by 815, we get 5 and a remainder of 375.
Put 5 as the next digit of the answer. 
Result so far: 82110.2907975
If we subtract 4075 from 4450, we get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Moving on to step 16:
815 goes into 3750 4 times with a remainder of 490.
Record the quotient 4 as the next digit in the result. 
Result so far: 82110.29079754
If we take 3260 away from 3750, we end up with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

After the division, we end up with 82110.29079754 and a remainder of 4.9e-07.