We're dividing 215665 by 81 
We're looking to find how many times 81 goes into 215665.

Step 1:
2 divided by 81 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 81

Moving on to step 2:
If we divide 21 by 81, we get 0 and a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Bring next digit (5) of the dividend behind the 21 and repeat the process: 215 / 81

Moving on to step 3:
If we divide 215 by 81, we get 2 and a remainder of 53.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 53 after subtracting 162 from 215.
Append the next digit (6) from the dividend to 53 and continue with: 536 / 81

Moving on to step 4:
If we divide 536 by 81, we get 6 and a remainder of 50.
Use 6 as the next digit of our solution. 
Result so far: 26.0
Deduct 486 from 536 and we're left with 50.
Grab the next digit (6) from the dividend, add it to 50, then carry on: 506 / 81

Step 5:
When dividing 506 by 81, we get 6 with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 266.0
If we take 486 away from 506, we end up with 20.
Include the next digit (5) from the dividend after 20, then repeat: 205 / 81

Step 6:
When dividing 205 by 81, we get 2 with a remainder of 43.
Put 2 as the next digit of the answer. 
Result so far: 2662.0
Deduct 162 from 205 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 7:
81 can be fit into 430 5 times, resulting in a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 2662.5
If we take 405 away from 430, 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.

Moving on to step 8:
81 goes into 250 3 times with a remainder of 7.
The next digit of our result is 3. 
Result so far: 2662.53
Subtracting 243 from 250 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 9:
81 goes into 70 0 times with a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 2662.53
Deduct 0 from 70 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 10:
700 divided by 81 is 8 with a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 2662.5308
Deduct 648 from 700 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.

Going ahead to step 11:
81 goes into 520 6 times with a remainder of 34.
The next digit of our result is 6. 
Result so far: 2662.53086
The remainder is 34 after subtracting 486 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 12:
The number 81 fits into 340 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 2662.530864
Deduct 324 from 340 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 13:
When dividing 160 by 81, we get 1 with a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 2662.5308641
Subtract 81 from 160 to get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 14:
If we divide 790 by 81, we get 9 and a remainder of 61.
The next digit of our result is 9. 
Result so far: 2662.53086419
Subtract 729 from 790 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

The final result is 2662.53086419 with a remainder of 6.1e-08.