We look at the division of 257288 by 9 
The aim is to understand the frequency of 9 in 257288.

On to step 1:
If we divide 2 by 9, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 9

Step 2:
If we divide 25 by 9, we get 2 and a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 18 from 25 and we're left with 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 9

Let's proceed to step 3:
77 divided by 9 is 8 with a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 28.0
Subtracting 72 from 77 leaves us with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 9

Let's proceed to step 4:
The number 9 fits into 52 5 times, leaving a remainder of 7.
Record the quotient 5 as the next digit in the result. 
Result so far: 285.0
Subtracting 45 from 52 leaves us with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 9

Let's proceed to step 5:
The number 9 fits into 78 8 times, leaving a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 2858.0
The remainder is 6 after subtracting 72 from 78.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 9

Step 6:
9 goes into 68 7 times with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 28587.0
Subtract 63 from 68 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
9 goes into 50 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 28587.5
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 8:
If we divide 50 by 9, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 28587.55
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 28587.55, with a leftover of 0.005.