568178 divided by 90 
The aim is to understand the frequency of 90 in 568178.

Moving on to step 1:
90 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (6) from the dividend, add it to 5, then carry on: 56 / 90

Advancing to step 2:
If we divide 56 by 90, we get 0 and a remainder of 56.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 56 after subtracting 0 from 56.
Append the next digit (8) from the dividend to 56 and continue with: 568 / 90

Step 3:
568 divided by 90 is 6 with a remainder of 28.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 28 after subtracting 540 from 568.
Take the next digit (1) from the dividend and append it to 28, then repeat: 281 / 90

On to step 4:
281 divided by 90 is 3 with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 63.0
If we subtract 270 from 281, we get 11.
Take the next digit (7) from the dividend and append it to 11, then repeat: 117 / 90

On to step 5:
90 can be fit into 117 1 times, resulting in a remainder of 27.
Write down 1 as next digit of the result. 
Result so far: 631.0
Subtract 90 from 117 to get 27.
Take the next digit (8) from the dividend and append it to 27, then repeat: 278 / 90

Going ahead to step 6:
The number 90 fits into 278 3 times, leaving a remainder of 8.
Record the quotient 3 as the next digit in the result. 
Result so far: 6313.0
If we take 270 away from 278, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
90 goes into 80 0 times with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 6313.0
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 8:
When dividing 800 by 90, we get 8 with a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 6313.08
Subtracting 720 from 800 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 9:
90 goes into 800 8 times with a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 6313.088
The remainder is 80 after subtracting 720 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 6313.088, with a leftover of 0.008.