We look at the division of 80164 by 90 
Let's see how many times 90 fits into 80164.

Step 1:
If we divide 8 by 90, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 90

Advancing to step 2:
If we divide 80 by 90, we get 0 and a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Bring next digit (1) of the dividend behind the 80 and repeat the process: 801 / 90

Going ahead to step 3:
90 goes into 801 8 times with a remainder of 81.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 720 from 801 leaves us with 81.
Include the next digit (6) from the dividend after 81, then repeat: 816 / 90

On to step 4:
90 goes into 816 9 times with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 89.0
Deduct 810 from 816 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 90

Moving on to step 5:
If we divide 64 by 90, we get 0 and a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 890.0
The remainder is 64 after subtracting 0 from 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 6:
90 can be fit into 640 7 times, resulting in a remainder of 10.
Record the quotient 7 as the next digit in the result. 
Result so far: 890.7
If we subtract 630 from 640, 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.

On to step 7:
The number 90 fits into 100 1 times, leaving a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 890.71
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
90 can be fit into 100 1 times, resulting in a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 890.711
Subtracting 90 from 100 leaves us with 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 890.711, with a leftover of 0.001.