We're dividing 178189 by 90 
Let's see how many times 90 fits into 178189.

On to step 1:
When dividing 1 by 90, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 90

On to step 2:
The number 90 fits into 17 0 times, leaving a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 90

Going ahead to step 3:
When dividing 178 by 90, we get 1 with a remainder of 88.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 90 from 178 to get 88.
Take the next digit (1) from the dividend and append it to 88, then repeat: 881 / 90

On to step 4:
90 can be fit into 881 9 times, resulting in a remainder of 71.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Deduct 810 from 881 and we're left with 71.
Include the next digit (8) from the dividend after 71, then repeat: 718 / 90

On to step 5:
718 divided by 90 is 7 with a remainder of 88.
The next digit of our result is 7. 
Result so far: 197.0
The remainder is 88 after subtracting 630 from 718.
Append the next digit (9) from the dividend to 88 and continue with: 889 / 90

On to step 6:
When dividing 889 by 90, we get 9 with a remainder of 79.
The next digit of our result is 9. 
Result so far: 1979.0
The remainder is 79 after subtracting 810 from 889.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

On to step 7:
90 goes into 790 8 times with a remainder of 70.
The number 8 becomes the next digit in our result. 
Result so far: 1979.8
If we subtract 720 from 790, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
700 divided by 90 is 7 with a remainder of 70.
Write down 7 as next digit of the result. 
Result so far: 1979.87
If we subtract 630 from 700, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 9:
90 can be fit into 700 7 times, resulting in a remainder of 70.
Write down 7 as next digit of the result. 
Result so far: 1979.877
If we take 630 away from 700, we end up 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.

The final result is 1979.877 with a remainder of 0.007.