We divide 129171 by 91
We want to figure out the number of times 129171 can be divided by 91.

Moving on to step 1:
When dividing 1 by 91, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 91

Moving on to step 2:
If we divide 12 by 91, we get 0 and a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Grab the next digit (9) from the dividend, add it to 12, then carry on: 129 / 91

Step 3:
91 goes into 129 1 times with a remainder of 38.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 91 from 129 to get 38.
Fetch the next digit (1) from the dividend, attach it to 38 and continue: 381 / 91

Step 4:
The number 91 fits into 381 4 times, leaving a remainder of 17.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Deduct 364 from 381 and we're left with 17.
Take the next digit (7) from the dividend and append it to 17, then repeat: 177 / 91

Moving on to step 5:
91 goes into 177 1 times with a remainder of 86.
The next digit of our result is 1. 
Result so far: 141.0
Subtracting 91 from 177 leaves us with 86.
Grab the next digit (1) from the dividend, add it to 86, then carry on: 861 / 91

Advancing to step 6:
If we divide 861 by 91, we get 9 and a remainder of 42.
Use 9 as the next digit of our solution. 
Result so far: 1419.0
Subtracting 819 from 861 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 7:
When dividing 420 by 91, we get 4 with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 1419.4
Subtracting 364 from 420 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 8:
560 divided by 91 is 6 with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 1419.46
The remainder is 14 after subtracting 546 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
91 goes into 140 1 times with a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 1419.461
If we subtract 91 from 140, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 10:
91 goes into 490 5 times with a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 1419.4615
If we take 455 away from 490, 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.

Moving on to step 11:
91 goes into 350 3 times with a remainder of 77.
Put 3 as the next digit of the answer. 
Result so far: 1419.46153
Deduct 273 from 350 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Going ahead to step 12:
If we divide 770 by 91, we get 8 and a remainder of 42.
The next digit of our result is 8. 
Result so far: 1419.461538
If we take 728 away from 770, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 13:
The number 91 fits into 420 4 times, leaving a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 1419.4615384
Subtract 364 from 420 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 14:
91 can be fit into 560 6 times, resulting in a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 1419.46153846
Subtract 546 from 560 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 1419.46153846 and a remainder of 1.4e-08.