We divide 471879 by 90
The aim is to understand the frequency of 90 in 471879.

Advancing to step 1:
4 divided by 90 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (7) from the dividend, add it to 4, then carry on: 47 / 90

Step 2:
90 can be fit into 47 0 times, resulting in a remainder of 47.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 47 leaves us with 47.
Grab the next digit (1) from the dividend, add it to 47, then carry on: 471 / 90

Going ahead to step 3:
471 divided by 90 is 5 with a remainder of 21.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 21 after subtracting 450 from 471.
Take the next digit (8) from the dividend and append it to 21, then repeat: 218 / 90

Step 4:
When dividing 218 by 90, we get 2 with a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 52.0
If we subtract 180 from 218, we get 38.
Append the next digit (7) from the dividend to 38 and continue with: 387 / 90

Step 5:
387 divided by 90 is 4 with a remainder of 27.
Write down 4 as next digit of the result. 
Result so far: 524.0
Subtracting 360 from 387 leaves us with 27.
Include the next digit (9) from the dividend after 27, then repeat: 279 / 90

Step 6:
90 goes into 279 3 times with a remainder of 9.
The next digit of our result is 3. 
Result so far: 5243.0
Subtracting 270 from 279 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
90 divided by 90 is 1 with a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 5243.1
Deduct 90 from 90 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:
0 divided by 90 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 5243.1
If we take 0 away from 0, we end up 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.

Let's proceed to step 9:
If we divide 0 by 90, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5243.1
The remainder is 0 after subtracting 0 from 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 5243.1, with a leftover of 0.0.