We look at the division of 89686789 by 171 
Let's see how many times 171 fits into 89686789.

Moving on to step 1:
8 divided by 171 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (9) from the dividend to 8 and continue with: 89 / 171

Going ahead to step 2:
The number 171 fits into 89 0 times, leaving a remainder of 89.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 89 and we're left with 89.
Fetch the next digit (6) from the dividend, attach it to 89 and continue: 896 / 171

Going ahead to step 3:
171 can be fit into 896 5 times, resulting in a remainder of 41.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 855 from 896, we get 41.
Include the next digit (8) from the dividend after 41, then repeat: 418 / 171

Step 4:
171 goes into 418 2 times with a remainder of 76.
Record the quotient 2 as the next digit in the result. 
Result so far: 52.0
The remainder is 76 after subtracting 342 from 418.
Include the next digit (6) from the dividend after 76, then repeat: 766 / 171

Advancing to step 5:
When dividing 766 by 171, we get 4 with a remainder of 82.
The next digit of our result is 4. 
Result so far: 524.0
If we subtract 684 from 766, we get 82.
Take the next digit (7) from the dividend and append it to 82, then repeat: 827 / 171

On to step 6:
When dividing 827 by 171, we get 4 with a remainder of 143.
Record the quotient 4 as the next digit in the result. 
Result so far: 5244.0
If we take 684 away from 827, we end up with 143.
Take the next digit (8) from the dividend and append it to 143, then repeat: 1438 / 171

Step 7:
171 goes into 1438 8 times with a remainder of 70.
The number 8 becomes the next digit in our result. 
Result so far: 52448.0
Subtracting 1368 from 1438 leaves us with 70.
Fetch the next digit (9) from the dividend, attach it to 70 and continue: 709 / 171

Moving on to step 8:
If we divide 709 by 171, we get 4 and a remainder of 25.
The number 4 becomes the next digit in our result. 
Result so far: 524484.0
Subtract 684 from 709 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 9:
The number 171 fits into 250 1 times, leaving a remainder of 79.
The number 1 becomes the next digit in our result. 
Result so far: 524484.1
Subtracting 171 from 250 leaves us with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 10:
If we divide 790 by 171, we get 4 and a remainder of 106.
Use 4 as the next digit of our solution. 
Result so far: 524484.14
Subtract 684 from 790 to get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Advancing to step 11:
171 goes into 1060 6 times with a remainder of 34.
Put 6 as the next digit of the answer. 
Result so far: 524484.146
Deduct 1026 from 1060 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 12:
If we divide 340 by 171, we get 1 and a remainder of 169.
Put 1 as the next digit of the answer. 
Result so far: 524484.1461
The remainder is 169 after subtracting 171 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

Going ahead to step 13:
If we divide 1690 by 171, we get 9 and a remainder of 151.
Record the quotient 9 as the next digit in the result. 
Result so far: 524484.14619
If we subtract 1539 from 1690, we get 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Moving on to step 14:
The number 171 fits into 1510 8 times, leaving a remainder of 142.
Record the quotient 8 as the next digit in the result. 
Result so far: 524484.146198
Subtract 1368 from 1510 to get 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Step 15:
If we divide 1420 by 171, we get 8 and a remainder of 52.
The next digit of our result is 8. 
Result so far: 524484.1461988
Deduct 1368 from 1420 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final outcome is 524484.1461988, with a leftover of 5.2e-07.