We divide 38587 by 90
The aim is to understand the frequency of 90 in 38587.

On to step 1:
90 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
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

Let's proceed to step 2:
If we divide 38 by 90, we get 0 and a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 38, we get 38.
Grab the next digit (5) from the dividend, add it to 38, then carry on: 385 / 90

Step 3:
385 divided by 90 is 4 with a remainder of 25.
Use 4 as the next digit of our solution. 
Result so far: 4.0
The remainder is 25 after subtracting 360 from 385.
Append the next digit (8) from the dividend to 25 and continue with: 258 / 90

Advancing to step 4:
If we divide 258 by 90, we get 2 and a remainder of 78.
Put 2 as the next digit of the answer. 
Result so far: 42.0
The remainder is 78 after subtracting 180 from 258.
Grab the next digit (7) from the dividend, add it to 78, then carry on: 787 / 90

Moving on to step 5:
The number 90 fits into 787 8 times, leaving a remainder of 67.
The next digit of our result is 8. 
Result so far: 428.0
The remainder is 67 after subtracting 720 from 787.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 6:
The number 90 fits into 670 7 times, leaving a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 428.7
Deduct 630 from 670 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 7:
400 divided by 90 is 4 with a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 428.74
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 8:
When dividing 400 by 90, we get 4 with a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 428.744
Deduct 360 from 400 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

In conclusion, the division gives 428.744 with a balance of 0.004.