Let's divide 479254 by 90
The aim is to understand the frequency of 90 in 479254.

Advancing to step 1:
When dividing 4 by 90, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (7) of the dividend behind the 4 and repeat the process: 47 / 90

Advancing to step 2:
90 goes into 47 0 times with a remainder of 47.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 47 and we're left with 47.
Grab the next digit (9) from the dividend, add it to 47, then carry on: 479 / 90

Step 3:
If we divide 479 by 90, we get 5 and a remainder of 29.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 450 away from 479, we end up with 29.
Include the next digit (2) from the dividend after 29, then repeat: 292 / 90

Let's proceed to step 4:
292 divided by 90 is 3 with a remainder of 22.
The number 3 becomes the next digit in our result. 
Result so far: 53.0
Subtract 270 from 292 to get 22.
Bring next digit (5) of the dividend behind the 22 and repeat the process: 225 / 90

Moving on to step 5:
When dividing 225 by 90, we get 2 with a remainder of 45.
Use 2 as the next digit of our solution. 
Result so far: 532.0
If we take 180 away from 225, we end up with 45.
Grab the next digit (4) from the dividend, add it to 45, then carry on: 454 / 90

Moving on to step 6:
If we divide 454 by 90, we get 5 and a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 5325.0
Deduct 450 from 454 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
40 divided by 90 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 5325.0
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 8:
When dividing 400 by 90, we get 4 with a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 5325.04
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
90 goes into 400 4 times with a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 5325.044
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 5325.044 and a remainder of 0.004.