86171822 ÷ 911 
We want to figure out the number of times 86171822 can be divided by 911.

On to step 1:
911 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 911

Advancing to step 2:
911 can be fit into 86 0 times, resulting in a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Append the next digit (1) from the dividend to 86 and continue with: 861 / 911

Step 3:
The number 911 fits into 861 0 times, leaving a remainder of 861.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 861 and we're left with 861.
Append the next digit (7) from the dividend to 861 and continue with: 8617 / 911

Let's proceed to step 4:
911 can be fit into 8617 9 times, resulting in a remainder of 418.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we subtract 8199 from 8617, we get 418.
Append the next digit (1) from the dividend to 418 and continue with: 4181 / 911

Moving on to step 5:
4181 divided by 911 is 4 with a remainder of 537.
The next digit of our result is 4. 
Result so far: 94.0
Subtracting 3644 from 4181 leaves us with 537.
Append the next digit (8) from the dividend to 537 and continue with: 5378 / 911

Advancing to step 6:
The number 911 fits into 5378 5 times, leaving a remainder of 823.
Write down 5 as next digit of the result. 
Result so far: 945.0
Subtract 4555 from 5378 to get 823.
Fetch the next digit (2) from the dividend, attach it to 823 and continue: 8232 / 911

Advancing to step 7:
When dividing 8232 by 911, we get 9 with a remainder of 33.
Write down 9 as next digit of the result. 
Result so far: 9459.0
If we subtract 8199 from 8232, we get 33.
Bring next digit (2) of the dividend behind the 33 and repeat the process: 332 / 911

Advancing to step 8:
The number 911 fits into 332 0 times, leaving a remainder of 332.
The next digit of our result is 0. 
Result so far: 94590.0
The remainder is 332 after subtracting 0 from 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Going ahead to step 9:
The number 911 fits into 3320 3 times, leaving a remainder of 587.
The next digit of our result is 3. 
Result so far: 94590.3
The remainder is 587 after subtracting 2733 from 3320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5870, and continue the process.

Going ahead to step 10:
When dividing 5870 by 911, we get 6 with a remainder of 404.
The next digit of our result is 6. 
Result so far: 94590.36
Deduct 5466 from 5870 and we're left with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Advancing to step 11:
The number 911 fits into 4040 4 times, leaving a remainder of 396.
Put 4 as the next digit of the answer. 
Result so far: 94590.364
Deduct 3644 from 4040 and we're left with 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Let's proceed to step 12:
3960 divided by 911 is 4 with a remainder of 316.
Use 4 as the next digit of our solution. 
Result so far: 94590.3644
Subtract 3644 from 3960 to get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

After the division, we end up with 94590.3644 and a remainder of 0.00316.