We divide 173384 by 90
The aim is to understand the frequency of 90 in 173384.

Step 1:
If we divide 1 by 90, we get 0 and 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.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 90

Moving on to step 2:
17 divided by 90 is 0 with a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Append the next digit (3) from the dividend to 17 and continue with: 173 / 90

Moving on to step 3:
When dividing 173 by 90, we get 1 with a remainder of 83.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 83 after subtracting 90 from 173.
Append the next digit (3) from the dividend to 83 and continue with: 833 / 90

Advancing to step 4:
The number 90 fits into 833 9 times, leaving a remainder of 23.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we subtract 810 from 833, we get 23.
Bring next digit (8) of the dividend behind the 23 and repeat the process: 238 / 90

On to step 5:
90 goes into 238 2 times with a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 192.0
If we subtract 180 from 238, we get 58.
Include the next digit (4) from the dividend after 58, then repeat: 584 / 90

Let's proceed to step 6:
If we divide 584 by 90, we get 6 and a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 1926.0
Deduct 540 from 584 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 7:
When dividing 440 by 90, we get 4 with a remainder of 80.
Use 4 as the next digit of our solution. 
Result so far: 1926.4
Subtracting 360 from 440 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 8:
90 goes into 800 8 times with a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 1926.48
Deduct 720 from 800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 9:
90 goes into 800 8 times with a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 1926.488
Subtracting 720 from 800 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The quotient of the division is 1926.488, and the remainder is 0.008.