171808 ÷ 84 
We want to figure out the number of times 171808 can be divided by 84.

On to step 1:
When dividing 1 by 84, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 84

Step 2:
84 goes into 17 0 times with a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Fetch the next digit (1) from the dividend, attach it to 17 and continue: 171 / 84

Let's proceed to step 3:
84 goes into 171 2 times with a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 168 away from 171, we end up with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 84

Step 4:
If we divide 38 by 84, we get 0 and a remainder of 38.
The next digit of our result is 0. 
Result so far: 20.0
If we subtract 0 from 38, we get 38.
Take the next digit (0) from the dividend and append it to 38, then repeat: 380 / 84

Moving on to step 5:
When dividing 380 by 84, we get 4 with a remainder of 44.
Put 4 as the next digit of the answer. 
Result so far: 204.0
The remainder is 44 after subtracting 336 from 380.
Include the next digit (8) from the dividend after 44, then repeat: 448 / 84

Advancing to step 6:
If we divide 448 by 84, we get 5 and a remainder of 28.
The next digit of our result is 5. 
Result so far: 2045.0
If we subtract 420 from 448, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 7:
280 divided by 84 is 3 with a remainder of 28.
Record the quotient 3 as the next digit in the result. 
Result so far: 2045.3
Subtracting 252 from 280 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 8:
If we divide 280 by 84, we get 3 and a remainder of 28.
Write down 3 as next digit of the result. 
Result so far: 2045.33
If we take 252 away from 280, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 2045.33, with a leftover of 0.028.