We look at the division of 171315 by 91 
Our goal is to divide 171315 by 91.

Advancing to step 1:
1 divided by 91 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 91

Moving on to step 2:
When dividing 17 by 91, we get 0 with a remainder of 17.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 91

Moving on to step 3:
91 goes into 171 1 times with a remainder of 80.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 91 from 171 to get 80.
Fetch the next digit (3) from the dividend, attach it to 80 and continue: 803 / 91

Moving on to step 4:
The number 91 fits into 803 8 times, leaving a remainder of 75.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Deduct 728 from 803 and we're left with 75.
Include the next digit (1) from the dividend after 75, then repeat: 751 / 91

Let's proceed to step 5:
When dividing 751 by 91, we get 8 with a remainder of 23.
Put 8 as the next digit of the answer. 
Result so far: 188.0
The remainder is 23 after subtracting 728 from 751.
Bring next digit (5) of the dividend behind the 23 and repeat the process: 235 / 91

Step 6:
91 can be fit into 235 2 times, resulting in a remainder of 53.
Write down 2 as next digit of the result. 
Result so far: 1882.0
If we take 182 away from 235, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 7:
91 can be fit into 530 5 times, resulting in a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 1882.5
If we subtract 455 from 530, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 8:
If we divide 750 by 91, we get 8 and a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 1882.58
The remainder is 22 after subtracting 728 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 9:
91 can be fit into 220 2 times, resulting in a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 1882.582
Subtracting 182 from 220 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 10:
When dividing 380 by 91, we get 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 1882.5824
Deduct 364 from 380 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 11:
91 can be fit into 160 1 times, resulting in a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 1882.58241
If we subtract 91 from 160, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 12:
690 divided by 91 is 7 with a remainder of 53.
The next digit of our result is 7. 
Result so far: 1882.582417
Deduct 637 from 690 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 13:
The number 91 fits into 530 5 times, leaving a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 1882.5824175
The remainder is 75 after subtracting 455 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 14:
91 goes into 750 8 times with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 1882.58241758
Subtract 728 from 750 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final outcome is 1882.58241758, with a leftover of 2.2e-08.