We look at the division of 173010 by 81 
We want to divide 173010 by 81.

On to step 1:
1 divided by 81 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 81

Moving on to step 2:
If we divide 17 by 81, we get 0 and a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 81

Moving on to step 3:
When dividing 173 by 81, we get 2 with a remainder of 11.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 162 from 173 to get 11.
Append the next digit (0) from the dividend to 11 and continue with: 110 / 81

Going ahead to step 4:
The number 81 fits into 110 1 times, leaving a remainder of 29.
Write down 1 as next digit of the result. 
Result so far: 21.0
Subtract 81 from 110 to get 29.
Include the next digit (1) from the dividend after 29, then repeat: 291 / 81

Moving on to step 5:
If we divide 291 by 81, we get 3 and a remainder of 48.
Record the quotient 3 as the next digit in the result. 
Result so far: 213.0
Subtracting 243 from 291 leaves us with 48.
Grab the next digit (0) from the dividend, add it to 48, then carry on: 480 / 81

Moving on to step 6:
81 can be fit into 480 5 times, resulting in a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 2135.0
Subtract 405 from 480 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 7:
When dividing 750 by 81, we get 9 with a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 2135.9
Subtract 729 from 750 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 8:
When dividing 210 by 81, we get 2 with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 2135.92
The remainder is 48 after subtracting 162 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 9:
81 goes into 480 5 times with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 2135.925
If we take 405 away from 480, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 10:
81 goes into 750 9 times with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 2135.9259
Subtract 729 from 750 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 11:
81 goes into 210 2 times with a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 2135.92592
If we take 162 away from 210, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 12:
If we divide 480 by 81, we get 5 and a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 2135.925925
The remainder is 75 after subtracting 405 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 13:
When dividing 750 by 81, we get 9 with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 2135.9259259
Deduct 729 from 750 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 14:
When dividing 210 by 81, we get 2 with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 2135.92592592
If we subtract 162 from 210, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 2135.92592592, with a leftover of 4.8e-08.