682373 ÷ 90 
The aim is to understand the frequency of 90 in 682373.

Advancing to step 1:
90 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 90

Moving on to step 2:
90 can be fit into 68 0 times, resulting in a remainder of 68.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Include the next digit (2) from the dividend after 68, then repeat: 682 / 90

Advancing to step 3:
90 goes into 682 7 times with a remainder of 52.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 630 from 682, we get 52.
Take the next digit (3) from the dividend and append it to 52, then repeat: 523 / 90

Moving on to step 4:
90 can be fit into 523 5 times, resulting in a remainder of 73.
Write down 5 as next digit of the result. 
Result so far: 75.0
Subtracting 450 from 523 leaves us with 73.
Grab the next digit (7) from the dividend, add it to 73, then carry on: 737 / 90

Step 5:
90 goes into 737 8 times with a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 758.0
If we take 720 away from 737, we end up with 17.
Grab the next digit (3) from the dividend, add it to 17, then carry on: 173 / 90

Moving on to step 6:
When dividing 173 by 90, we get 1 with a remainder of 83.
Use 1 as the next digit of our solution. 
Result so far: 7581.0
Deduct 90 from 173 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 7:
The number 90 fits into 830 9 times, leaving a remainder of 20.
The number 9 becomes the next digit in our result. 
Result so far: 7581.9
If we subtract 810 from 830, 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.

Going ahead to step 8:
90 goes into 200 2 times with a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 7581.92
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.

Let's proceed to step 9:
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: 7581.922
Subtracting 180 from 200 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.

The final outcome is 7581.922, with a leftover of 0.002.