We look at the division of 694700 by 90 
The aim is to understand the frequency of 90 in 694700.

Let's proceed to step 1:
90 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 90

Moving on to step 2:
69 divided by 90 is 0 with a remainder of 69.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 69 and we're left with 69.
Include the next digit (4) from the dividend after 69, then repeat: 694 / 90

Moving on to step 3:
90 can be fit into 694 7 times, resulting in a remainder of 64.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 630 from 694 to get 64.
Bring next digit (7) of the dividend behind the 64 and repeat the process: 647 / 90

On to step 4:
90 goes into 647 7 times with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 77.0
If we take 630 away from 647, we end up with 17.
Take the next digit (0) from the dividend and append it to 17, then repeat: 170 / 90

Advancing to step 5:
90 can be fit into 170 1 times, resulting in a remainder of 80.
The number 1 becomes the next digit in our result. 
Result so far: 771.0
Subtracting 90 from 170 leaves us with 80.
Fetch the next digit (0) from the dividend, attach it to 80 and continue: 800 / 90

On to step 6:
800 divided by 90 is 8 with a remainder of 80.
Use 8 as the next digit of our solution. 
Result so far: 7718.0
Subtract 720 from 800 to get 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 7:
The number 90 fits into 800 8 times, leaving a remainder of 80.
Use 8 as the next digit of our solution. 
Result so far: 7718.8
If we take 720 away from 800, we end up 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:
The number 90 fits into 800 8 times, leaving a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 7718.88
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.

Our division results in 7718.88 with a remaining 0.08.