We look at the division of 171491 by 66 
Let's see how many times 66 fits into 171491.

On to step 1:
If we divide 1 by 66, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 66

Step 2:
17 divided by 66 is 0 with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 66

Going ahead to step 3:
66 goes into 171 2 times with a remainder of 39.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 39 after subtracting 132 from 171.
Include the next digit (4) from the dividend after 39, then repeat: 394 / 66

Let's proceed to step 4:
When dividing 394 by 66, we get 5 with a remainder of 64.
The next digit of our result is 5. 
Result so far: 25.0
If we subtract 330 from 394, we get 64.
Grab the next digit (9) from the dividend, add it to 64, then carry on: 649 / 66

Moving on to step 5:
66 can be fit into 649 9 times, resulting in a remainder of 55.
Use 9 as the next digit of our solution. 
Result so far: 259.0
Subtract 594 from 649 to get 55.
Bring next digit (1) of the dividend behind the 55 and repeat the process: 551 / 66

Going ahead to step 6:
When dividing 551 by 66, we get 8 with a remainder of 23.
The number 8 becomes the next digit in our result. 
Result so far: 2598.0
The remainder is 23 after subtracting 528 from 551.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 7:
230 divided by 66 is 3 with a remainder of 32.
The number 3 becomes the next digit in our result. 
Result so far: 2598.3
If we subtract 198 from 230, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 8:
66 can be fit into 320 4 times, resulting in a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 2598.34
Deduct 264 from 320 and we're left 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 9:
66 goes into 560 8 times with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 2598.348
Subtract 528 from 560 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 10:
66 goes into 320 4 times with a remainder of 56.
The next digit of our result is 4. 
Result so far: 2598.3484
Subtracting 264 from 320 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 11:
560 divided by 66 is 8 with a remainder of 32.
The next digit of our result is 8. 
Result so far: 2598.34848
Subtract 528 from 560 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 12:
If we divide 320 by 66, we get 4 and a remainder of 56.
The next digit of our result is 4. 
Result so far: 2598.348484
Subtracting 264 from 320 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.

Let's proceed to step 13:
If we divide 560 by 66, we get 8 and a remainder of 32.
The next digit of our result is 8. 
Result so far: 2598.3484848
Subtract 528 from 560 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 14:
The number 66 fits into 320 4 times, leaving a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 2598.34848484
If we subtract 264 from 320, we 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.

The final outcome is 2598.34848484, with a leftover of 5.6e-08.