72129 ÷ 91 
Let's see how many times 91 fits into 72129.

Advancing to step 1:
91 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 91

Step 2:
When dividing 72 by 91, we get 0 with a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Fetch the next digit (1) from the dividend, attach it to 72 and continue: 721 / 91

Going ahead to step 3:
If we divide 721 by 91, we get 7 and a remainder of 84.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 637 from 721 leaves us with 84.
Append the next digit (2) from the dividend to 84 and continue with: 842 / 91

On to step 4:
91 goes into 842 9 times with a remainder of 23.
Use 9 as the next digit of our solution. 
Result so far: 79.0
Deduct 819 from 842 and we're left with 23.
Grab the next digit (9) from the dividend, add it to 23, then carry on: 239 / 91

Step 5:
239 divided by 91 is 2 with a remainder of 57.
Record the quotient 2 as the next digit in the result. 
Result so far: 792.0
Deduct 182 from 239 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 6:
If we divide 570 by 91, we get 6 and a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 792.6
The remainder is 24 after subtracting 546 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 7:
The number 91 fits into 240 2 times, leaving a remainder of 58.
Write down 2 as next digit of the result. 
Result so far: 792.62
The remainder is 58 after subtracting 182 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 8:
91 can be fit into 580 6 times, resulting in a remainder of 34.
Record the quotient 6 as the next digit in the result. 
Result so far: 792.626
Subtract 546 from 580 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 9:
340 divided by 91 is 3 with a remainder of 67.
The number 3 becomes the next digit in our result. 
Result so far: 792.6263
Deduct 273 from 340 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 10:
The number 91 fits into 670 7 times, leaving a remainder of 33.
Put 7 as the next digit of the answer. 
Result so far: 792.62637
Subtract 637 from 670 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 11:
When dividing 330 by 91, we get 3 with a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 792.626373
If we take 273 away from 330, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 12:
570 divided by 91 is 6 with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 792.6263736
Subtracting 546 from 570 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 13:
If we divide 240 by 91, we get 2 and a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 792.62637362
The remainder is 58 after subtracting 182 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 792.62637362 with a remainder of 5.8e-08.