178058 ÷ 90 
The aim is to understand the frequency of 90 in 178058.

Step 1:
90 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 90

On to step 2:
When dividing 17 by 90, we get 0 with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Take the next digit (8) from the dividend and append it to 17, then repeat: 178 / 90

On to step 3:
When dividing 178 by 90, we get 1 with a remainder of 88.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 90 from 178, we get 88.
Take the next digit (0) from the dividend and append it to 88, then repeat: 880 / 90

Moving on to step 4:
When dividing 880 by 90, we get 9 with a remainder of 70.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Subtracting 810 from 880 leaves us with 70.
Grab the next digit (5) from the dividend, add it to 70, then carry on: 705 / 90

Let's proceed to step 5:
If we divide 705 by 90, we get 7 and a remainder of 75.
Put 7 as the next digit of the answer. 
Result so far: 197.0
Deduct 630 from 705 and we're left with 75.
Grab the next digit (8) from the dividend, add it to 75, then carry on: 758 / 90

On to step 6:
The number 90 fits into 758 8 times, leaving a remainder of 38.
Write down 8 as next digit of the result. 
Result so far: 1978.0
Deduct 720 from 758 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 7:
90 goes into 380 4 times with a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 1978.4
Subtracting 360 from 380 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
When dividing 200 by 90, we get 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 1978.42
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
200 divided by 90 is 2 with a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 1978.422
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 1978.422, with a leftover of 0.002.