13808 divided by 81 
We want to figure out the number of times 13808 can be divided by 81.

On to step 1:
If we divide 1 by 81, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 81

Going ahead to step 2:
The number 81 fits into 13 0 times, leaving a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Bring next digit (8) of the dividend behind the 13 and repeat the process: 138 / 81

Advancing to step 3:
138 divided by 81 is 1 with a remainder of 57.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 81 from 138 to get 57.
Bring next digit (0) of the dividend behind the 57 and repeat the process: 570 / 81

On to step 4:
When dividing 570 by 81, we get 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
If we take 567 away from 570, we end up with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 81

Going ahead to step 5:
81 goes into 38 0 times with a remainder of 38.
Record the quotient 0 as the next digit in the result. 
Result so far: 170.0
The remainder is 38 after subtracting 0 from 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 6:
The number 81 fits into 380 4 times, leaving a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 170.4
If we take 324 away from 380, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 7:
560 divided by 81 is 6 with a remainder of 74.
Put 6 as the next digit of the answer. 
Result so far: 170.46
Deduct 486 from 560 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 8:
81 goes into 740 9 times with a remainder of 11.
The next digit of our result is 9. 
Result so far: 170.469
Subtracting 729 from 740 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
The number 81 fits into 110 1 times, leaving a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 170.4691
The remainder is 29 after subtracting 81 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 10:
If we divide 290 by 81, we get 3 and a remainder of 47.
The next digit of our result is 3. 
Result so far: 170.46913
Subtracting 243 from 290 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 11:
When dividing 470 by 81, we get 5 with a remainder of 65.
Put 5 as the next digit of the answer. 
Result so far: 170.469135
The remainder is 65 after subtracting 405 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 12:
When dividing 650 by 81, we get 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 170.4691358
Deduct 648 from 650 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 13:
The number 81 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 170.4691358
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 170.4691358 and a remainder of 2e-08.