Let's divide 384577 by 90
The aim is to understand the frequency of 90 in 384577.

Going ahead to step 1:
If we divide 3 by 90, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 90

On to step 2:
90 can be fit into 38 0 times, resulting in a remainder of 38.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 38 leaves us with 38.
Append the next digit (4) from the dividend to 38 and continue with: 384 / 90

Step 3:
When dividing 384 by 90, we get 4 with a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 360 from 384 leaves us with 24.
Append the next digit (5) from the dividend to 24 and continue with: 245 / 90

Going ahead to step 4:
90 can be fit into 245 2 times, resulting in a remainder of 65.
The next digit of our result is 2. 
Result so far: 42.0
Deduct 180 from 245 and we're left with 65.
Append the next digit (7) from the dividend to 65 and continue with: 657 / 90

Step 5:
90 can be fit into 657 7 times, resulting in a remainder of 27.
Write down 7 as next digit of the result. 
Result so far: 427.0
Deduct 630 from 657 and we're left with 27.
Take the next digit (7) from the dividend and append it to 27, then repeat: 277 / 90

Let's proceed to step 6:
277 divided by 90 is 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 4273.0
If we take 270 away from 277, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 7:
If we divide 70 by 90, we get 0 and a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 4273.0
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
The number 90 fits into 700 7 times, leaving a remainder of 70.
Use 7 as the next digit of our solution. 
Result so far: 4273.07
Subtracting 630 from 700 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 9:
The number 90 fits into 700 7 times, leaving a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 4273.077
The remainder is 70 after subtracting 630 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The quotient of the division is 4273.077, and the remainder is 0.007.