80395648 ÷ 99 
Let's see how many times 99 fits into 80395648.

Step 1:
The number 99 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 99

Moving on to step 2:
The number 99 fits into 80 0 times, leaving a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Include the next digit (3) from the dividend after 80, then repeat: 803 / 99

Going ahead to step 3:
If we divide 803 by 99, we get 8 and a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 11 after subtracting 792 from 803.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 99

Advancing to step 4:
The number 99 fits into 119 1 times, leaving a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
The remainder is 20 after subtracting 99 from 119.
Append the next digit (5) from the dividend to 20 and continue with: 205 / 99

Step 5:
If we divide 205 by 99, we get 2 and a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 812.0
Subtract 198 from 205 to get 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 99

Let's proceed to step 6:
If we divide 76 by 99, we get 0 and a remainder of 76.
The number 0 becomes the next digit in our result. 
Result so far: 8120.0
If we take 0 away from 76, we end up with 76.
Grab the next digit (4) from the dividend, add it to 76, then carry on: 764 / 99

On to step 7:
764 divided by 99 is 7 with a remainder of 71.
Record the quotient 7 as the next digit in the result. 
Result so far: 81207.0
Subtracting 693 from 764 leaves us with 71.
Bring next digit (8) of the dividend behind the 71 and repeat the process: 718 / 99

Step 8:
99 goes into 718 7 times with a remainder of 25.
The number 7 becomes the next digit in our result. 
Result so far: 812077.0
The remainder is 25 after subtracting 693 from 718.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 9:
If we divide 250 by 99, we get 2 and a remainder of 52.
Put 2 as the next digit of the answer. 
Result so far: 812077.2
If we subtract 198 from 250, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 10:
When dividing 520 by 99, we get 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 812077.25
If we take 495 away from 520, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 11:
When dividing 250 by 99, we get 2 with a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 812077.252
Deduct 198 from 250 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 12:
520 divided by 99 is 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 812077.2525
Deduct 495 from 520 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 13:
When dividing 250 by 99, we get 2 with a remainder of 52.
Use 2 as the next digit of our solution. 
Result so far: 812077.25252
Subtracting 198 from 250 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 14:
If we divide 520 by 99, we get 5 and a remainder of 25.
The next digit of our result is 5. 
Result so far: 812077.252525
If we take 495 away from 520, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 15:
If we divide 250 by 99, we get 2 and a remainder of 52.
Put 2 as the next digit of the answer. 
Result so far: 812077.2525252
Subtract 198 from 250 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 16:
When dividing 520 by 99, we get 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 812077.25252525
Subtracting 495 from 520 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The quotient of the division is 812077.25252525, and the remainder is 2.5e-08.