We're dividing 86195971 by 166 
Let's see how many times 166 fits into 86195971.

Step 1:
166 can be fit into 8 0 times, resulting in 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.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 166

On to step 2:
166 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
Subtracting 0 from 86 leaves us with 86.
Include the next digit (1) from the dividend after 86, then repeat: 861 / 166

Moving on to step 3:
861 divided by 166 is 5 with a remainder of 31.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 830 away from 861, we end up with 31.
Grab the next digit (9) from the dividend, add it to 31, then carry on: 319 / 166

Advancing to step 4:
The number 166 fits into 319 1 times, leaving a remainder of 153.
Write down 1 as next digit of the result. 
Result so far: 51.0
Subtract 166 from 319 to get 153.
Append the next digit (5) from the dividend to 153 and continue with: 1535 / 166

Let's proceed to step 5:
1535 divided by 166 is 9 with a remainder of 41.
Put 9 as the next digit of the answer. 
Result so far: 519.0
If we take 1494 away from 1535, we end up with 41.
Append the next digit (9) from the dividend to 41 and continue with: 419 / 166

On to step 6:
If we divide 419 by 166, we get 2 and a remainder of 87.
Use 2 as the next digit of our solution. 
Result so far: 5192.0
The remainder is 87 after subtracting 332 from 419.
Include the next digit (7) from the dividend after 87, then repeat: 877 / 166

Step 7:
877 divided by 166 is 5 with a remainder of 47.
Use 5 as the next digit of our solution. 
Result so far: 51925.0
The remainder is 47 after subtracting 830 from 877.
Bring next digit (1) of the dividend behind the 47 and repeat the process: 471 / 166

On to step 8:
When dividing 471 by 166, we get 2 with a remainder of 139.
Write down 2 as next digit of the result. 
Result so far: 519252.0
The remainder is 139 after subtracting 332 from 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

Step 9:
166 can be fit into 1390 8 times, resulting in a remainder of 62.
Use 8 as the next digit of our solution. 
Result so far: 519252.8
Subtract 1328 from 1390 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 10:
620 divided by 166 is 3 with a remainder of 122.
The next digit of our result is 3. 
Result so far: 519252.83
If we take 498 away from 620, we end up with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Step 11:
166 can be fit into 1220 7 times, resulting in a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 519252.837
If we take 1162 away from 1220, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 12:
166 can be fit into 580 3 times, resulting in a remainder of 82.
The next digit of our result is 3. 
Result so far: 519252.8373
If we subtract 498 from 580, we get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

On to step 13:
If we divide 820 by 166, we get 4 and a remainder of 156.
The next digit of our result is 4. 
Result so far: 519252.83734
If we subtract 664 from 820, we get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Advancing to step 14:
When dividing 1560 by 166, we get 9 with a remainder of 66.
The next digit of our result is 9. 
Result so far: 519252.837349
If we subtract 1494 from 1560, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 15:
166 goes into 660 3 times with a remainder of 162.
Write down 3 as next digit of the result. 
Result so far: 519252.8373493
The remainder is 162 after subtracting 498 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Moving on to step 16:
When dividing 1620 by 166, we get 9 with a remainder of 126.
The number 9 becomes the next digit in our result. 
Result so far: 519252.83734939
Subtracting 1494 from 1620 leaves us with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

The quotient of the division is 519252.83734939, and the remainder is 1.26e-07.