547458 divided by 90 
The aim is to understand the frequency of 90 in 547458.

On to step 1:
The number 90 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 90

Let's proceed to step 2:
The number 90 fits into 54 0 times, leaving a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 54 and we're left with 54.
Append the next digit (7) from the dividend to 54 and continue with: 547 / 90

Let's proceed to step 3:
When dividing 547 by 90, we get 6 with a remainder of 7.
The next digit of our result is 6. 
Result so far: 6.0
If we take 540 away from 547, we end up with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 90

On to step 4:
90 goes into 74 0 times with a remainder of 74.
The number 0 becomes the next digit in our result. 
Result so far: 60.0
Deduct 0 from 74 and we're left with 74.
Grab the next digit (5) from the dividend, add it to 74, then carry on: 745 / 90

Let's proceed to step 5:
745 divided by 90 is 8 with a remainder of 25.
The next digit of our result is 8. 
Result so far: 608.0
Subtracting 720 from 745 leaves us with 25.
Append the next digit (8) from the dividend to 25 and continue with: 258 / 90

On to step 6:
The number 90 fits into 258 2 times, leaving a remainder of 78.
The next digit of our result is 2. 
Result so far: 6082.0
Deduct 180 from 258 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 7:
90 can be fit into 780 8 times, resulting in a remainder of 60.
The next digit of our result is 8. 
Result so far: 6082.8
The remainder is 60 after subtracting 720 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 8:
600 divided by 90 is 6 with a remainder of 60.
The next digit of our result is 6. 
Result so far: 6082.86
Deduct 540 from 600 and we're left 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.

Let's proceed to step 9:
90 goes into 600 6 times with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 6082.866
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 outcome is 6082.866, with a leftover of 0.006.