9128884 divided by 307 
The aim is to understand the frequency of 307 in 9128884.

On to step 1:
The number 307 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 307

Let's proceed to step 2:
91 divided by 307 is 0 with a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Fetch the next digit (2) from the dividend, attach it to 91 and continue: 912 / 307

Moving on to step 3:
307 can be fit into 912 2 times, resulting in a remainder of 298.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 614 from 912, we get 298.
Include the next digit (8) from the dividend after 298, then repeat: 2988 / 307

On to step 4:
The number 307 fits into 2988 9 times, leaving a remainder of 225.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
Subtract 2763 from 2988 to get 225.
Append the next digit (8) from the dividend to 225 and continue with: 2258 / 307

Going ahead to step 5:
If we divide 2258 by 307, we get 7 and a remainder of 109.
The number 7 becomes the next digit in our result. 
Result so far: 297.0
Deduct 2149 from 2258 and we're left with 109.
Bring next digit (8) of the dividend behind the 109 and repeat the process: 1098 / 307

Going ahead to step 6:
If we divide 1098 by 307, we get 3 and a remainder of 177.
The next digit of our result is 3. 
Result so far: 2973.0
Deduct 921 from 1098 and we're left with 177.
Fetch the next digit (4) from the dividend, attach it to 177 and continue: 1774 / 307

Moving on to step 7:
The number 307 fits into 1774 5 times, leaving a remainder of 239.
The number 5 becomes the next digit in our result. 
Result so far: 29735.0
If we take 1535 away from 1774, we end up with 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Moving on to step 8:
When dividing 2390 by 307, we get 7 with a remainder of 241.
The number 7 becomes the next digit in our result. 
Result so far: 29735.7
If we take 2149 away from 2390, we end up with 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Advancing to step 9:
If we divide 2410 by 307, we get 7 and a remainder of 261.
Record the quotient 7 as the next digit in the result. 
Result so far: 29735.77
The remainder is 261 after subtracting 2149 from 2410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

The final result is 29735.77 with a remainder of 0.261.