479286 ÷ 90 
The aim is to understand the frequency of 90 in 479286.

Step 1:
4 divided by 90 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (7) from the dividend, attach it to 4 and continue: 47 / 90

Advancing to step 2:
When dividing 47 by 90, we get 0 with a remainder of 47.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 47 to get 47.
Take the next digit (9) from the dividend and append it to 47, then repeat: 479 / 90

Step 3:
90 goes into 479 5 times with a remainder of 29.
Write down 5 as next digit of the result. 
Result so far: 5.0
The remainder is 29 after subtracting 450 from 479.
Append the next digit (2) from the dividend to 29 and continue with: 292 / 90

Advancing to step 4:
When dividing 292 by 90, we get 3 with a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 53.0
If we take 270 away from 292, we end up with 22.
Bring next digit (8) of the dividend behind the 22 and repeat the process: 228 / 90

Let's proceed to step 5:
90 can be fit into 228 2 times, resulting in a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 532.0
If we take 180 away from 228, we end up with 48.
Bring next digit (6) of the dividend behind the 48 and repeat the process: 486 / 90

Step 6:
The number 90 fits into 486 5 times, leaving a remainder of 36.
Record the quotient 5 as the next digit in the result. 
Result so far: 5325.0
If we take 450 away from 486, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 7:
360 divided by 90 is 4 with a remainder of 0.
The next digit of our result is 4. 
Result so far: 5325.4
Deduct 360 from 360 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
90 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5325.4
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
90 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 5325.4
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 5325.4, with a leftover of 0.0.