We divide 72365309 by 815
We're looking to find how many times 815 goes into 72365309.

On to step 1:
815 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 815

Going ahead 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
If we subtract 0 from 72, we get 72.
Grab the next digit (3) from the dividend, add it to 72, then carry on: 723 / 815

On to step 3:
When dividing 723 by 815, we get 0 with a remainder of 723.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 723, we get 723.
Append the next digit (6) from the dividend to 723 and continue with: 7236 / 815

Going ahead to step 4:
The number 815 fits into 7236 8 times, leaving a remainder of 716.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 6520 from 7236 and we're left with 716.
Include the next digit (5) from the dividend after 716, then repeat: 7165 / 815

Advancing to step 5:
7165 divided by 815 is 8 with a remainder of 645.
Write down 8 as next digit of the result. 
Result so far: 88.0
If we take 6520 away from 7165, we end up with 645.
Include the next digit (3) from the dividend after 645, then repeat: 6453 / 815

Step 6:
815 goes into 6453 7 times with a remainder of 748.
Put 7 as the next digit of the answer. 
Result so far: 887.0
Deduct 5705 from 6453 and we're left with 748.
Append the next digit (0) from the dividend to 748 and continue with: 7480 / 815

Let's proceed to step 7:
When dividing 7480 by 815, we get 9 with a remainder of 145.
Record the quotient 9 as the next digit in the result. 
Result so far: 8879.0
Subtracting 7335 from 7480 leaves us with 145.
Bring next digit (9) of the dividend behind the 145 and repeat the process: 1459 / 815

On to step 8:
1459 divided by 815 is 1 with a remainder of 644.
The next digit of our result is 1. 
Result so far: 88791.0
Subtracting 815 from 1459 leaves us with 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

Step 9:
815 can be fit into 6440 7 times, resulting in a remainder of 735.
Use 7 as the next digit of our solution. 
Result so far: 88791.7
Subtract 5705 from 6440 to get 735.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7350, and continue the process.

Step 10:
7350 divided by 815 is 9 with a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 88791.79
Subtract 7335 from 7350 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 11:
The number 815 fits into 150 0 times, leaving a remainder of 150.
Record the quotient 0 as the next digit in the result. 
Result so far: 88791.79
Subtract 0 from 150 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 12:
1500 divided by 815 is 1 with a remainder of 685.
The next digit of our result is 1. 
Result so far: 88791.7901
The remainder is 685 after subtracting 815 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6850, and continue the process.

On to step 13:
815 goes into 6850 8 times with a remainder of 330.
Write down 8 as next digit of the result. 
Result so far: 88791.79018
If we take 6520 away from 6850, we end up with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Going ahead to step 14:
815 goes into 3300 4 times with a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 88791.790184
Subtracting 3260 from 3300 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 15:
The number 815 fits into 400 0 times, leaving a remainder of 400.
The next digit of our result is 0. 
Result so far: 88791.790184
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Advancing to step 16:
When dividing 4000 by 815, we get 4 with a remainder of 740.
Record the quotient 4 as the next digit in the result. 
Result so far: 88791.79018404
The remainder is 740 after subtracting 3260 from 4000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

The final outcome is 88791.79018404, with a leftover of 7.4e-07.