655179 divided by 90 
The aim is to understand the frequency of 90 in 655179.

Going ahead to step 1:
When dividing 6 by 90, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 90

Let's proceed to step 2:
The number 90 fits into 65 0 times, leaving a remainder of 65.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 65 leaves us with 65.
Bring next digit (5) of the dividend behind the 65 and repeat the process: 655 / 90

Step 3:
The number 90 fits into 655 7 times, leaving a remainder of 25.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 630 from 655 leaves us with 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 90

Let's proceed to step 4:
If we divide 251 by 90, we get 2 and a remainder of 71.
The next digit of our result is 2. 
Result so far: 72.0
Subtracting 180 from 251 leaves us with 71.
Include the next digit (7) from the dividend after 71, then repeat: 717 / 90

Step 5:
When dividing 717 by 90, we get 7 with a remainder of 87.
Write down 7 as next digit of the result. 
Result so far: 727.0
Deduct 630 from 717 and we're left with 87.
Bring next digit (9) of the dividend behind the 87 and repeat the process: 879 / 90

Going ahead to step 6:
When dividing 879 by 90, we get 9 with a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 7279.0
The remainder is 69 after subtracting 810 from 879.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 7:
90 can be fit into 690 7 times, resulting in a remainder of 60.
Use 7 as the next digit of our solution. 
Result so far: 7279.7
If we subtract 630 from 690, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
90 can be fit into 600 6 times, resulting in a remainder of 60.
The next digit of our result is 6. 
Result so far: 7279.76
If we subtract 540 from 600, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 9:
90 can be fit into 600 6 times, resulting in a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 7279.766
If we take 540 away from 600, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final result is 7279.766 with a remainder of 0.006.