81922090 divided by 81 
Our goal is to divide 81922090 by 81.

Moving on to step 1:
8 divided by 81 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 81

Moving on to step 2:
The number 81 fits into 81 1 times, leaving a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 81 from 81 to get 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 81

Step 3:
The number 81 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (2) from the dividend after 9, then repeat: 92 / 81

On to step 4:
81 goes into 92 1 times with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 101.0
Deduct 81 from 92 and we're left with 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 81

On to step 5:
81 goes into 112 1 times with a remainder of 31.
The next digit of our result is 1. 
Result so far: 1011.0
If we take 81 away from 112, we end up with 31.
Append the next digit (0) from the dividend to 31 and continue with: 310 / 81

Step 6:
When dividing 310 by 81, we get 3 with a remainder of 67.
Use 3 as the next digit of our solution. 
Result so far: 10113.0
Subtract 243 from 310 to get 67.
Grab the next digit (9) from the dividend, add it to 67, then carry on: 679 / 81

Going ahead to step 7:
81 can be fit into 679 8 times, resulting in a remainder of 31.
Use 8 as the next digit of our solution. 
Result so far: 101138.0
Deduct 648 from 679 and we're left with 31.
Include the next digit (0) from the dividend after 31, then repeat: 310 / 81

Step 8:
81 can be fit into 310 3 times, resulting in a remainder of 67.
Write down 3 as next digit of the result. 
Result so far: 1011383.0
Deduct 243 from 310 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 9:
81 can be fit into 670 8 times, resulting in a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 1011383.8
If we take 648 away from 670, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 10:
If we divide 220 by 81, we get 2 and a remainder of 58.
Write down 2 as next digit of the result. 
Result so far: 1011383.82
Subtract 162 from 220 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 11:
81 can be fit into 580 7 times, resulting in a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 1011383.827
Subtract 567 from 580 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 12:
The number 81 fits into 130 1 times, leaving a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 1011383.8271
Subtracting 81 from 130 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 13:
When dividing 490 by 81, we get 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 1011383.82716
Subtract 486 from 490 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 14:
40 divided by 81 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 1011383.82716
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 15:
The number 81 fits into 400 4 times, leaving a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 1011383.8271604
Deduct 324 from 400 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 16:
When dividing 760 by 81, we get 9 with a remainder of 31.
The next digit of our result is 9. 
Result so far: 1011383.82716049
If we take 729 away from 760, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

The final result is 1011383.82716049 with a remainder of 3.1e-08.