99900777 divided by 811 
We want to figure out the number of times 99900777 can be divided by 811.

On to step 1:
The number 811 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 811

Step 2:
When dividing 99 by 811, we get 0 with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Bring next digit (9) of the dividend behind the 99 and repeat the process: 999 / 811

Step 3:
811 goes into 999 1 times with a remainder of 188.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 811 from 999 to get 188.
Take the next digit (0) from the dividend and append it to 188, then repeat: 1880 / 811

Advancing to step 4:
When dividing 1880 by 811, we get 2 with a remainder of 258.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 1622 from 1880, we get 258.
Append the next digit (0) from the dividend to 258 and continue with: 2580 / 811

Let's proceed to step 5:
The number 811 fits into 2580 3 times, leaving a remainder of 147.
Write down 3 as next digit of the result. 
Result so far: 123.0
The remainder is 147 after subtracting 2433 from 2580.
Bring next digit (7) of the dividend behind the 147 and repeat the process: 1477 / 811

Step 6:
811 goes into 1477 1 times with a remainder of 666.
The next digit of our result is 1. 
Result so far: 1231.0
The remainder is 666 after subtracting 811 from 1477.
Grab the next digit (7) from the dividend, add it to 666, then carry on: 6667 / 811

Step 7:
811 goes into 6667 8 times with a remainder of 179.
Write down 8 as next digit of the result. 
Result so far: 12318.0
If we take 6488 away from 6667, we end up with 179.
Fetch the next digit (7) from the dividend, attach it to 179 and continue: 1797 / 811

Advancing to step 8:
If we divide 1797 by 811, we get 2 and a remainder of 175.
Record the quotient 2 as the next digit in the result. 
Result so far: 123182.0
Subtract 1622 from 1797 to get 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Moving on to step 9:
When dividing 1750 by 811, we get 2 with a remainder of 128.
Write down 2 as next digit of the result. 
Result so far: 123182.2
If we take 1622 away from 1750, we end up with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Let's proceed to step 10:
The number 811 fits into 1280 1 times, leaving a remainder of 469.
Use 1 as the next digit of our solution. 
Result so far: 123182.21
Subtracting 811 from 1280 leaves us with 469.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4690, and continue the process.

Advancing to step 11:
4690 divided by 811 is 5 with a remainder of 635.
Record the quotient 5 as the next digit in the result. 
Result so far: 123182.215
If we subtract 4055 from 4690, we get 635.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Advancing to step 12:
When dividing 6350 by 811, we get 7 with a remainder of 673.
Write down 7 as next digit of the result. 
Result so far: 123182.2157
The remainder is 673 after subtracting 5677 from 6350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6730, and continue the process.

Going ahead to step 13:
When dividing 6730 by 811, we get 8 with a remainder of 242.
The number 8 becomes the next digit in our result. 
Result so far: 123182.21578
Subtract 6488 from 6730 to get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Let's proceed to step 14:
When dividing 2420 by 811, we get 2 with a remainder of 798.
Put 2 as the next digit of the answer. 
Result so far: 123182.215782
If we subtract 1622 from 2420, we get 798.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7980, and continue the process.

Step 15:
7980 divided by 811 is 9 with a remainder of 681.
Write down 9 as next digit of the result. 
Result so far: 123182.2157829
Deduct 7299 from 7980 and we're left with 681.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6810, and continue the process.

Going ahead to step 16:
The number 811 fits into 6810 8 times, leaving a remainder of 322.
Write down 8 as next digit of the result. 
Result so far: 123182.21578298
The remainder is 322 after subtracting 6488 from 6810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

The final outcome is 123182.21578298, with a leftover of 3.22e-07.