91512137 ÷ 728 
We want to divide 91512137 by 728.

Let's proceed to step 1:
The number 728 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 728

On to step 2:
When dividing 91 by 728, we get 0 with a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 91, we end up with 91.
Take the next digit (5) from the dividend and append it to 91, then repeat: 915 / 728

Step 3:
728 goes into 915 1 times with a remainder of 187.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 728 from 915 to get 187.
Include the next digit (1) from the dividend after 187, then repeat: 1871 / 728

Step 4:
728 goes into 1871 2 times with a remainder of 415.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 1456 from 1871 leaves us with 415.
Fetch the next digit (2) from the dividend, attach it to 415 and continue: 4152 / 728

Moving on to step 5:
If we divide 4152 by 728, we get 5 and a remainder of 512.
Use 5 as the next digit of our solution. 
Result so far: 125.0
Subtract 3640 from 4152 to get 512.
Bring next digit (1) of the dividend behind the 512 and repeat the process: 5121 / 728

Step 6:
5121 divided by 728 is 7 with a remainder of 25.
The next digit of our result is 7. 
Result so far: 1257.0
Subtract 5096 from 5121 to get 25.
Bring next digit (3) of the dividend behind the 25 and repeat the process: 253 / 728

Step 7:
728 goes into 253 0 times with a remainder of 253.
The next digit of our result is 0. 
Result so far: 12570.0
The remainder is 253 after subtracting 0 from 253.
Fetch the next digit (7) from the dividend, attach it to 253 and continue: 2537 / 728

On to step 8:
728 goes into 2537 3 times with a remainder of 353.
The number 3 becomes the next digit in our result. 
Result so far: 125703.0
Deduct 2184 from 2537 and we're left with 353.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

On to step 9:
The number 728 fits into 3530 4 times, leaving a remainder of 618.
The next digit of our result is 4. 
Result so far: 125703.4
Subtract 2912 from 3530 to get 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Advancing to step 10:
728 can be fit into 6180 8 times, resulting in a remainder of 356.
The next digit of our result is 8. 
Result so far: 125703.48
If we take 5824 away from 6180, we end up with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Step 11:
3560 divided by 728 is 4 with a remainder of 648.
Write down 4 as next digit of the result. 
Result so far: 125703.484
The remainder is 648 after subtracting 2912 from 3560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

Step 12:
When dividing 6480 by 728, we get 8 with a remainder of 656.
Use 8 as the next digit of our solution. 
Result so far: 125703.4848
The remainder is 656 after subtracting 5824 from 6480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Going ahead to step 13:
728 can be fit into 6560 9 times, resulting in a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 125703.48489
Subtracting 6552 from 6560 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.

Advancing to step 14:
80 divided by 728 is 0 with a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 125703.48489
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.

Moving on to step 15:
800 divided by 728 is 1 with a remainder of 72.
Use 1 as the next digit of our solution. 
Result so far: 125703.4848901
If we take 728 away from 800, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 16:
When dividing 720 by 728, we get 0 with a remainder of 720.
Write down 0 as next digit of the result. 
Result so far: 125703.4848901
If we take 0 away from 720, we end up with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

The final outcome is 125703.4848901, with a leftover of 7.2e-07.