80380020 divided by 81 
We're looking to find how many times 81 goes into 80380020.

Going ahead to step 1:
If we divide 8 by 81, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 81

Going ahead to step 2:
If we divide 80 by 81, we get 0 and 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.
Bring next digit (3) of the dividend behind the 80 and repeat the process: 803 / 81

Let's proceed to step 3:
When dividing 803 by 81, we get 9 with a remainder of 74.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtracting 729 from 803 leaves us with 74.
Fetch the next digit (8) from the dividend, attach it to 74 and continue: 748 / 81

Let's proceed to step 4:
748 divided by 81 is 9 with a remainder of 19.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
If we subtract 729 from 748, we get 19.
Take the next digit (0) from the dividend and append it to 19, then repeat: 190 / 81

Moving on to step 5:
The number 81 fits into 190 2 times, leaving a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 992.0
If we take 162 away from 190, we end up with 28.
Fetch the next digit (0) from the dividend, attach it to 28 and continue: 280 / 81

Step 6:
When dividing 280 by 81, we get 3 with a remainder of 37.
The next digit of our result is 3. 
Result so far: 9923.0
Subtracting 243 from 280 leaves us with 37.
Bring next digit (2) of the dividend behind the 37 and repeat the process: 372 / 81

Moving on to step 7:
When dividing 372 by 81, we get 4 with a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 99234.0
Subtract 324 from 372 to get 48.
Grab the next digit (0) from the dividend, add it to 48, then carry on: 480 / 81

Advancing to step 8:
480 divided by 81 is 5 with a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 992345.0
Subtract 405 from 480 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 9:
750 divided by 81 is 9 with a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 992345.9
If we take 729 away from 750, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 10:
81 goes into 210 2 times with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 992345.92
Deduct 162 from 210 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 11:
When dividing 480 by 81, we get 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 992345.925
If we take 405 away from 480, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 12:
81 goes into 750 9 times with a remainder of 21.
The next digit of our result is 9. 
Result so far: 992345.9259
Subtract 729 from 750 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 13:
81 can be fit into 210 2 times, resulting in a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 992345.92592
Deduct 162 from 210 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 14:
480 divided by 81 is 5 with a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 992345.925925
If we take 405 away from 480, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 15:
If we divide 750 by 81, we get 9 and a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 992345.9259259
Deduct 729 from 750 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 16:
If we divide 210 by 81, we get 2 and a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 992345.92592592
If we take 162 away from 210, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final result is 992345.92592592 with a remainder of 4.8e-08.