86212950 ÷ 171 
We want to divide 86212950 by 171.

Let's proceed to step 1:
If we divide 8 by 171, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 171

Advancing to step 2:
When dividing 86 by 171, we get 0 with a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Include the next digit (2) from the dividend after 86, then repeat: 862 / 171

Let's proceed to step 3:
If we divide 862 by 171, we get 5 and a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtract 855 from 862 to get 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 171

Step 4:
171 can be fit into 71 0 times, resulting in a remainder of 71.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
Subtracting 0 from 71 leaves us with 71.
Take the next digit (2) from the dividend and append it to 71, then repeat: 712 / 171

Moving on to step 5:
712 divided by 171 is 4 with a remainder of 28.
The next digit of our result is 4. 
Result so far: 504.0
Deduct 684 from 712 and we're left with 28.
Grab the next digit (9) from the dividend, add it to 28, then carry on: 289 / 171

Step 6:
289 divided by 171 is 1 with a remainder of 118.
Record the quotient 1 as the next digit in the result. 
Result so far: 5041.0
The remainder is 118 after subtracting 171 from 289.
Grab the next digit (5) from the dividend, add it to 118, then carry on: 1185 / 171

Moving on to step 7:
If we divide 1185 by 171, we get 6 and a remainder of 159.
Write down 6 as next digit of the result. 
Result so far: 50416.0
If we subtract 1026 from 1185, we get 159.
Include the next digit (0) from the dividend after 159, then repeat: 1590 / 171

Going ahead to step 8:
171 can be fit into 1590 9 times, resulting in a remainder of 51.
Put 9 as the next digit of the answer. 
Result so far: 504169.0
Deduct 1539 from 1590 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 9:
171 goes into 510 2 times with a remainder of 168.
The next digit of our result is 2. 
Result so far: 504169.2
If we take 342 away from 510, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Going ahead to step 10:
171 goes into 1680 9 times with a remainder of 141.
Record the quotient 9 as the next digit in the result. 
Result so far: 504169.29
Subtracting 1539 from 1680 leaves us with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Going ahead to step 11:
171 can be fit into 1410 8 times, resulting in a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 504169.298
If we subtract 1368 from 1410, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 12:
420 divided by 171 is 2 with a remainder of 78.
Write down 2 as next digit of the result. 
Result so far: 504169.2982
If we subtract 342 from 420, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 13:
When dividing 780 by 171, we get 4 with a remainder of 96.
Put 4 as the next digit of the answer. 
Result so far: 504169.29824
Deduct 684 from 780 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 14:
When dividing 960 by 171, we get 5 with a remainder of 105.
The number 5 becomes the next digit in our result. 
Result so far: 504169.298245
The remainder is 105 after subtracting 855 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Let's proceed to step 15:
171 can be fit into 1050 6 times, resulting in a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 504169.2982456
The remainder is 24 after subtracting 1026 from 1050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 16:
240 divided by 171 is 1 with a remainder of 69.
Put 1 as the next digit of the answer. 
Result so far: 504169.29824561
Deduct 171 from 240 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

The final outcome is 504169.29824561, with a leftover of 6.9e-08.