We divide 99964 by 75
The aim is to understand the frequency of 75 in 99964.

Advancing to step 1:
The number 75 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 75

On to step 2:
If we divide 99 by 75, we get 1 and a remainder of 24.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 24 after subtracting 75 from 99.
Bring next digit (9) of the dividend behind the 24 and repeat the process: 249 / 75

Advancing to step 3:
If we divide 249 by 75, we get 3 and a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Deduct 225 from 249 and we're left with 24.
Grab the next digit (6) from the dividend, add it to 24, then carry on: 246 / 75

Let's proceed to step 4:
246 divided by 75 is 3 with a remainder of 21.
The next digit of our result is 3. 
Result so far: 133.0
Deduct 225 from 246 and we're left with 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 75

Let's proceed to step 5:
75 can be fit into 214 2 times, resulting in a remainder of 64.
The number 2 becomes the next digit in our result. 
Result so far: 1332.0
If we take 150 away from 214, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 6:
The number 75 fits into 640 8 times, leaving a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 1332.8
If we subtract 600 from 640, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 7:
400 divided by 75 is 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 1332.85
Deduct 375 from 400 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 8:
250 divided by 75 is 3 with a remainder of 25.
Put 3 as the next digit of the answer. 
Result so far: 1332.853
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 9:
The number 75 fits into 250 3 times, leaving a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 1332.8533
If we subtract 225 from 250, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 1332.8533 and a remainder of 0.00025.