72817732 ÷ 815 
We want to figure out the number of times 72817732 can be divided by 815.

Step 1:
The number 815 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 815

Advancing to step 2:
If we divide 72 by 815, we get 0 and a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 72 and we're left with 72.
Bring next digit (8) of the dividend behind the 72 and repeat the process: 728 / 815

Going ahead to step 3:
815 can be fit into 728 0 times, resulting in a remainder of 728.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 728 leaves us with 728.
Append the next digit (1) from the dividend to 728 and continue with: 7281 / 815

Step 4:
815 goes into 7281 8 times with a remainder of 761.
The next digit of our result is 8. 
Result so far: 8.0
If we take 6520 away from 7281, we end up with 761.
Fetch the next digit (7) from the dividend, attach it to 761 and continue: 7617 / 815

Advancing to step 5:
815 goes into 7617 9 times with a remainder of 282.
Put 9 as the next digit of the answer. 
Result so far: 89.0
Subtracting 7335 from 7617 leaves us with 282.
Bring next digit (7) of the dividend behind the 282 and repeat the process: 2827 / 815

Step 6:
When dividing 2827 by 815, we get 3 with a remainder of 382.
Put 3 as the next digit of the answer. 
Result so far: 893.0
Deduct 2445 from 2827 and we're left with 382.
Bring next digit (3) of the dividend behind the 382 and repeat the process: 3823 / 815

Moving on to step 7:
3823 divided by 815 is 4 with a remainder of 563.
Put 4 as the next digit of the answer. 
Result so far: 8934.0
Subtracting 3260 from 3823 leaves us with 563.
Bring next digit (2) of the dividend behind the 563 and repeat the process: 5632 / 815

Step 8:
The number 815 fits into 5632 6 times, leaving a remainder of 742.
Write down 6 as next digit of the result. 
Result so far: 89346.0
The remainder is 742 after subtracting 4890 from 5632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7420, and continue the process.

Moving on to step 9:
The number 815 fits into 7420 9 times, leaving a remainder of 85.
The number 9 becomes the next digit in our result. 
Result so far: 89346.9
Subtracting 7335 from 7420 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 10:
850 divided by 815 is 1 with a remainder of 35.
The next digit of our result is 1. 
Result so far: 89346.91
If we take 815 away from 850, 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.

Let's proceed to step 11:
The number 815 fits into 350 0 times, leaving a remainder of 350.
Put 0 as the next digit of the answer. 
Result so far: 89346.91
If we take 0 away from 350, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

On to step 12:
When dividing 3500 by 815, we get 4 with a remainder of 240.
The next digit of our result is 4. 
Result so far: 89346.9104
Subtracting 3260 from 3500 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 13:
When dividing 2400 by 815, we get 2 with a remainder of 770.
The number 2 becomes the next digit in our result. 
Result so far: 89346.91042
If we subtract 1630 from 2400, we get 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7700, and continue the process.

Moving on to step 14:
If we divide 7700 by 815, we get 9 and a remainder of 365.
Put 9 as the next digit of the answer. 
Result so far: 89346.910429
Subtract 7335 from 7700 to get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Step 15:
When dividing 3650 by 815, we get 4 with a remainder of 390.
Use 4 as the next digit of our solution. 
Result so far: 89346.9104294
If we subtract 3260 from 3650, we get 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Going ahead to step 16:
The number 815 fits into 3900 4 times, leaving a remainder of 640.
The next digit of our result is 4. 
Result so far: 89346.91042944
Subtract 3260 from 3900 to get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

The final outcome is 89346.91042944, with a leftover of 6.4e-07.