We look at the division of 81812792 by 215 
We want to figure out the number of times 81812792 can be divided by 215.

Step 1:
When dividing 8 by 215, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 215

Let's proceed to step 2:
When dividing 81 by 215, we get 0 with a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Grab the next digit (8) from the dividend, add it to 81, then carry on: 818 / 215

Step 3:
If we divide 818 by 215, we get 3 and a remainder of 173.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 173 after subtracting 645 from 818.
Bring next digit (1) of the dividend behind the 173 and repeat the process: 1731 / 215

Let's proceed to step 4:
1731 divided by 215 is 8 with a remainder of 11.
Write down 8 as next digit of the result. 
Result so far: 38.0
The remainder is 11 after subtracting 1720 from 1731.
Append the next digit (2) from the dividend to 11 and continue with: 112 / 215

Let's proceed to step 5:
215 can be fit into 112 0 times, resulting in a remainder of 112.
Write down 0 as next digit of the result. 
Result so far: 380.0
Subtracting 0 from 112 leaves us with 112.
Fetch the next digit (7) from the dividend, attach it to 112 and continue: 1127 / 215

Advancing to step 6:
215 can be fit into 1127 5 times, resulting in a remainder of 52.
Use 5 as the next digit of our solution. 
Result so far: 3805.0
The remainder is 52 after subtracting 1075 from 1127.
Grab the next digit (9) from the dividend, add it to 52, then carry on: 529 / 215

Moving on to step 7:
215 goes into 529 2 times with a remainder of 99.
Use 2 as the next digit of our solution. 
Result so far: 38052.0
The remainder is 99 after subtracting 430 from 529.
Fetch the next digit (2) from the dividend, attach it to 99 and continue: 992 / 215

Moving on to step 8:
The number 215 fits into 992 4 times, leaving a remainder of 132.
The next digit of our result is 4. 
Result so far: 380524.0
Subtract 860 from 992 to get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Advancing to step 9:
The number 215 fits into 1320 6 times, leaving a remainder of 30.
The next digit of our result is 6. 
Result so far: 380524.6
Subtracting 1290 from 1320 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 10:
215 goes into 300 1 times with a remainder of 85.
Use 1 as the next digit of our solution. 
Result so far: 380524.61
Subtracting 215 from 300 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Let's proceed to step 11:
The number 215 fits into 850 3 times, leaving a remainder of 205.
Write down 3 as next digit of the result. 
Result so far: 380524.613
Subtract 645 from 850 to get 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Going ahead to step 12:
When dividing 2050 by 215, we get 9 with a remainder of 115.
Write down 9 as next digit of the result. 
Result so far: 380524.6139
Subtracting 1935 from 2050 leaves us with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Moving on to step 13:
1150 divided by 215 is 5 with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 380524.61395
Deduct 1075 from 1150 and we're left 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.

Let's proceed to step 14:
If we divide 750 by 215, we get 3 and a remainder of 105.
The number 3 becomes the next digit in our result. 
Result so far: 380524.613953
The remainder is 105 after subtracting 645 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Step 15:
215 can be fit into 1050 4 times, resulting in a remainder of 190.
Record the quotient 4 as the next digit in the result. 
Result so far: 380524.6139534
Subtracting 860 from 1050 leaves us with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Let's proceed to step 16:
215 goes into 1900 8 times with a remainder of 180.
The number 8 becomes the next digit in our result. 
Result so far: 380524.61395348
If we take 1720 away from 1900, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

The final result is 380524.61395348 with a remainder of 1.8e-07.