We look at the division of 97243137 by 75 
The aim is to understand the frequency of 75 in 97243137.

Let's proceed to step 1:
When dividing 9 by 75, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 75

On to step 2:
When dividing 97 by 75, we get 1 with a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 75 from 97, we get 22.
Append the next digit (2) from the dividend to 22 and continue with: 222 / 75

Advancing to step 3:
When dividing 222 by 75, we get 2 with a remainder of 72.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 72 after subtracting 150 from 222.
Grab the next digit (4) from the dividend, add it to 72, then carry on: 724 / 75

Advancing to step 4:
If we divide 724 by 75, we get 9 and a remainder of 49.
The next digit of our result is 9. 
Result so far: 129.0
If we take 675 away from 724, we end up with 49.
Include the next digit (3) from the dividend after 49, then repeat: 493 / 75

Advancing to step 5:
75 can be fit into 493 6 times, resulting in a remainder of 43.
Use 6 as the next digit of our solution. 
Result so far: 1296.0
The remainder is 43 after subtracting 450 from 493.
Bring next digit (1) of the dividend behind the 43 and repeat the process: 431 / 75

Step 6:
431 divided by 75 is 5 with a remainder of 56.
Put 5 as the next digit of the answer. 
Result so far: 12965.0
Deduct 375 from 431 and we're left with 56.
Bring next digit (3) of the dividend behind the 56 and repeat the process: 563 / 75

Moving on to step 7:
When dividing 563 by 75, we get 7 with a remainder of 38.
Use 7 as the next digit of our solution. 
Result so far: 129657.0
If we subtract 525 from 563, we get 38.
Grab the next digit (7) from the dividend, add it to 38, then carry on: 387 / 75

Going ahead to step 8:
75 can be fit into 387 5 times, resulting in a remainder of 12.
The next digit of our result is 5. 
Result so far: 1296575.0
Deduct 375 from 387 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
75 goes into 120 1 times with a remainder of 45.
Put 1 as the next digit of the answer. 
Result so far: 1296575.1
Subtract 75 from 120 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 10:
When dividing 450 by 75, we get 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 1296575.16
The remainder is 0 after subtracting 450 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
If we divide 0 by 75, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1296575.16
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 12:
When dividing 0 by 75, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1296575.16
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 1296575.16 with a remainder of 0.0.