We're dividing 66699520 by 811 
We want to divide 66699520 by 811.

On to step 1:
When dividing 6 by 811, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 811

Going ahead to step 2:
66 divided by 811 is 0 with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Append the next digit (6) from the dividend to 66 and continue with: 666 / 811

Let's proceed to step 3:
811 can be fit into 666 0 times, resulting in a remainder of 666.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 666, we end up with 666.
Take the next digit (9) from the dividend and append it to 666, then repeat: 6669 / 811

Advancing to step 4:
6669 divided by 811 is 8 with a remainder of 181.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Deduct 6488 from 6669 and we're left with 181.
Take the next digit (9) from the dividend and append it to 181, then repeat: 1819 / 811

Advancing to step 5:
The number 811 fits into 1819 2 times, leaving a remainder of 197.
The next digit of our result is 2. 
Result so far: 82.0
Subtract 1622 from 1819 to get 197.
Grab the next digit (5) from the dividend, add it to 197, then carry on: 1975 / 811

Step 6:
1975 divided by 811 is 2 with a remainder of 353.
Write down 2 as next digit of the result. 
Result so far: 822.0
Subtract 1622 from 1975 to get 353.
Fetch the next digit (2) from the dividend, attach it to 353 and continue: 3532 / 811

Advancing to step 7:
811 goes into 3532 4 times with a remainder of 288.
Record the quotient 4 as the next digit in the result. 
Result so far: 8224.0
The remainder is 288 after subtracting 3244 from 3532.
Take the next digit (0) from the dividend and append it to 288, then repeat: 2880 / 811

Let's proceed to step 8:
811 goes into 2880 3 times with a remainder of 447.
Use 3 as the next digit of our solution. 
Result so far: 82243.0
Deduct 2433 from 2880 and we're left with 447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

Going ahead to step 9:
The number 811 fits into 4470 5 times, leaving a remainder of 415.
Write down 5 as next digit of the result. 
Result so far: 82243.5
The remainder is 415 after subtracting 4055 from 4470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Going ahead to step 10:
4150 divided by 811 is 5 with a remainder of 95.
The next digit of our result is 5. 
Result so far: 82243.55
The remainder is 95 after subtracting 4055 from 4150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

The final result is 82243.55 with a remainder of 0.095.