202391 ÷ 81 
We're looking to find how many times 81 goes into 202391.

Step 1:
If we divide 2 by 81, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 81

On to step 2:
20 divided by 81 is 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Fetch the next digit (2) from the dividend, attach it to 20 and continue: 202 / 81

Let's proceed to step 3:
When dividing 202 by 81, we get 2 with a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 162 from 202 leaves us with 40.
Bring next digit (3) of the dividend behind the 40 and repeat the process: 403 / 81

Advancing to step 4:
The number 81 fits into 403 4 times, leaving a remainder of 79.
Use 4 as the next digit of our solution. 
Result so far: 24.0
Subtracting 324 from 403 leaves us with 79.
Bring next digit (9) of the dividend behind the 79 and repeat the process: 799 / 81

Advancing to step 5:
81 goes into 799 9 times with a remainder of 70.
The number 9 becomes the next digit in our result. 
Result so far: 249.0
If we subtract 729 from 799, we get 70.
Include the next digit (1) from the dividend after 70, then repeat: 701 / 81

On to step 6:
If we divide 701 by 81, we get 8 and a remainder of 53.
Record the quotient 8 as the next digit in the result. 
Result so far: 2498.0
Deduct 648 from 701 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 7:
When dividing 530 by 81, we get 6 with a remainder of 44.
The next digit of our result is 6. 
Result so far: 2498.6
If we take 486 away from 530, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 8:
When dividing 440 by 81, we get 5 with a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 2498.65
If we take 405 away from 440, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 9:
81 can be fit into 350 4 times, resulting in a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 2498.654
If we subtract 324 from 350, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 10:
81 can be fit into 260 3 times, resulting in a remainder of 17.
The next digit of our result is 3. 
Result so far: 2498.6543
Subtracting 243 from 260 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 11:
When dividing 170 by 81, we get 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 2498.65432
Subtracting 162 from 170 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 12:
When dividing 80 by 81, we get 0 with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 2498.65432
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 13:
The number 81 fits into 800 9 times, leaving a remainder of 71.
The next digit of our result is 9. 
Result so far: 2498.6543209
Subtracting 729 from 800 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 14:
The number 81 fits into 710 8 times, leaving a remainder of 62.
The next digit of our result is 8. 
Result so far: 2498.65432098
Subtract 648 from 710 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

After the division, we end up with 2498.65432098 and a remainder of 6.2e-08.