We're dividing 87166 by 85 
We're looking to find how many times 85 goes into 87166.

Step 1:
When dividing 8 by 85, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 85

On to step 2:
When dividing 87 by 85, we get 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 85 away from 87, we end up with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 85

Step 3:
85 goes into 21 0 times with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (6) from the dividend, add it to 21, then carry on: 216 / 85

Going ahead to step 4:
When dividing 216 by 85, we get 2 with a remainder of 46.
Put 2 as the next digit of the answer. 
Result so far: 102.0
If we subtract 170 from 216, we get 46.
Include the next digit (6) from the dividend after 46, then repeat: 466 / 85

Advancing to step 5:
85 can be fit into 466 5 times, resulting in a remainder of 41.
The number 5 becomes the next digit in our result. 
Result so far: 1025.0
Deduct 425 from 466 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 6:
410 divided by 85 is 4 with a remainder of 70.
Put 4 as the next digit of the answer. 
Result so far: 1025.4
Deduct 340 from 410 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 7:
85 can be fit into 700 8 times, resulting in a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 1025.48
Subtracting 680 from 700 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
If we divide 200 by 85, we get 2 and a remainder of 30.
Put 2 as the next digit of the answer. 
Result so far: 1025.482
Subtract 170 from 200 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
When dividing 300 by 85, we get 3 with a remainder of 45.
The next digit of our result is 3. 
Result so far: 1025.4823
Subtract 255 from 300 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 10:
The number 85 fits into 450 5 times, leaving a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 1025.48235
If we take 425 away from 450, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 11:
85 can be fit into 250 2 times, resulting in a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 1025.482352
Deduct 170 from 250 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 12:
85 goes into 800 9 times with a remainder of 35.
Put 9 as the next digit of the answer. 
Result so far: 1025.4823529
If we take 765 away from 800, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 13:
If we divide 350 by 85, we get 4 and a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 1025.48235294
If we subtract 340 from 350, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 1025.48235294, with a leftover of 1e-08.