542574 ÷ 90 
The aim is to understand the frequency of 90 in 542574.

Going ahead to step 1:
90 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 90

Going ahead to step 2:
When dividing 54 by 90, we get 0 with a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 54 after subtracting 0 from 54.
Grab the next digit (2) from the dividend, add it to 54, then carry on: 542 / 90

Going ahead to step 3:
90 goes into 542 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 540 from 542 leaves us with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 90

Going ahead to step 4:
90 can be fit into 25 0 times, resulting in a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 60.0
The remainder is 25 after subtracting 0 from 25.
Fetch the next digit (7) from the dividend, attach it to 25 and continue: 257 / 90

On to step 5:
The number 90 fits into 257 2 times, leaving a remainder of 77.
The number 2 becomes the next digit in our result. 
Result so far: 602.0
The remainder is 77 after subtracting 180 from 257.
Grab the next digit (4) from the dividend, add it to 77, then carry on: 774 / 90

Going ahead to step 6:
When dividing 774 by 90, we get 8 with a remainder of 54.
Record the quotient 8 as the next digit in the result. 
Result so far: 6028.0
Subtract 720 from 774 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 7:
The number 90 fits into 540 6 times, leaving a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 6028.6
If we take 540 away from 540, 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.

Going ahead to step 8:
90 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 6028.6
Subtracting 0 from 0 leaves us 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.

On to step 9:
If we divide 0 by 90, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6028.6
Subtracting 0 from 0 leaves us 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.

In conclusion, the division gives 6028.6 with a balance of 0.0.