We look at the division of 81912028 by 315 
We want to figure out the number of times 81912028 can be divided by 315.

Moving on to step 1:
8 divided by 315 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 315

Going ahead to step 2:
315 can be fit into 81 0 times, resulting in a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Grab the next digit (9) from the dividend, add it to 81, then carry on: 819 / 315

Advancing to step 3:
The number 315 fits into 819 2 times, leaving a remainder of 189.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 630 away from 819, we end up with 189.
Fetch the next digit (1) from the dividend, attach it to 189 and continue: 1891 / 315

On to step 4:
The number 315 fits into 1891 6 times, leaving a remainder of 1.
The next digit of our result is 6. 
Result so far: 26.0
If we subtract 1890 from 1891, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 315

Moving on to step 5:
When dividing 12 by 315, we get 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 260.0
Deduct 0 from 12 and we're left with 12.
Include the next digit (0) from the dividend after 12, then repeat: 120 / 315

Step 6:
315 can be fit into 120 0 times, resulting in a remainder of 120.
Use 0 as the next digit of our solution. 
Result so far: 2600.0
Subtract 0 from 120 to get 120.
Fetch the next digit (2) from the dividend, attach it to 120 and continue: 1202 / 315

Moving on to step 7:
The number 315 fits into 1202 3 times, leaving a remainder of 257.
The number 3 becomes the next digit in our result. 
Result so far: 26003.0
Deduct 945 from 1202 and we're left with 257.
Append the next digit (8) from the dividend to 257 and continue with: 2578 / 315

Let's proceed to step 8:
315 goes into 2578 8 times with a remainder of 58.
Write down 8 as next digit of the result. 
Result so far: 260038.0
Deduct 2520 from 2578 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 9:
580 divided by 315 is 1 with a remainder of 265.
Record the quotient 1 as the next digit in the result. 
Result so far: 260038.1
Deduct 315 from 580 and we're left with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

On to step 10:
315 can be fit into 2650 8 times, resulting in a remainder of 130.
Record the quotient 8 as the next digit in the result. 
Result so far: 260038.18
Deduct 2520 from 2650 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Let's proceed to step 11:
1300 divided by 315 is 4 with a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 260038.184
If we subtract 1260 from 1300, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 12:
315 goes into 400 1 times with a remainder of 85.
Use 1 as the next digit of our solution. 
Result so far: 260038.1841
Subtract 315 from 400 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Moving on to step 13:
315 goes into 850 2 times with a remainder of 220.
Record the quotient 2 as the next digit in the result. 
Result so far: 260038.18412
If we take 630 away from 850, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 14:
2200 divided by 315 is 6 with a remainder of 310.
Record the quotient 6 as the next digit in the result. 
Result so far: 260038.184126
Deduct 1890 from 2200 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

On to step 15:
The number 315 fits into 3100 9 times, leaving a remainder of 265.
Record the quotient 9 as the next digit in the result. 
Result so far: 260038.1841269
Subtracting 2835 from 3100 leaves us with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

On to step 16:
If we divide 2650 by 315, we get 8 and a remainder of 130.
Put 8 as the next digit of the answer. 
Result so far: 260038.18412698
If we subtract 2520 from 2650, we get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

In conclusion, the division gives 260038.18412698 with a balance of 1.3e-07.