We're dividing 170490 by 18 
We want to figure out the number of times 170490 can be divided by 18.

Going ahead to step 1:
If we divide 1 by 18, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 18

Moving on to step 2:
If we divide 17 by 18, we get 0 and a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 18

Step 3:
170 divided by 18 is 9 with a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 162 from 170, we get 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 18

Going ahead to step 4:
When dividing 84 by 18, we get 4 with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 94.0
Subtract 72 from 84 to get 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 18

Going ahead to step 5:
18 goes into 129 7 times with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 947.0
Deduct 126 from 129 and we're left with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 18

Let's proceed to step 6:
18 can be fit into 30 1 times, resulting in a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 9471.0
If we subtract 18 from 30, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 7:
18 goes into 120 6 times with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 9471.6
Subtract 108 from 120 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 8:
If we divide 120 by 18, we get 6 and a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 9471.66
If we subtract 108 from 120, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

In conclusion, the division gives 9471.66 with a balance of 0.012.