64098595 ÷ 375 
The aim is to understand the frequency of 375 in 64098595.

Moving on to step 1:
6 divided by 375 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 375

Moving on to step 2:
64 divided by 375 is 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Take the next digit (0) from the dividend and append it to 64, then repeat: 640 / 375

Let's proceed to step 3:
When dividing 640 by 375, we get 1 with a remainder of 265.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 375 from 640, we get 265.
Grab the next digit (9) from the dividend, add it to 265, then carry on: 2659 / 375

Advancing to step 4:
375 goes into 2659 7 times with a remainder of 34.
Write down 7 as next digit of the result. 
Result so far: 17.0
Deduct 2625 from 2659 and we're left with 34.
Include the next digit (8) from the dividend after 34, then repeat: 348 / 375

Advancing to step 5:
If we divide 348 by 375, we get 0 and a remainder of 348.
The number 0 becomes the next digit in our result. 
Result so far: 170.0
Subtract 0 from 348 to get 348.
Take the next digit (5) from the dividend and append it to 348, then repeat: 3485 / 375

Going ahead to step 6:
When dividing 3485 by 375, we get 9 with a remainder of 110.
Record the quotient 9 as the next digit in the result. 
Result so far: 1709.0
If we subtract 3375 from 3485, we get 110.
Bring next digit (9) of the dividend behind the 110 and repeat the process: 1109 / 375

On to step 7:
375 can be fit into 1109 2 times, resulting in a remainder of 359.
Use 2 as the next digit of our solution. 
Result so far: 17092.0
Deduct 750 from 1109 and we're left with 359.
Bring next digit (5) of the dividend behind the 359 and repeat the process: 3595 / 375

Moving on to step 8:
375 can be fit into 3595 9 times, resulting in a remainder of 220.
Record the quotient 9 as the next digit in the result. 
Result so far: 170929.0
Subtracting 3375 from 3595 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 9:
The number 375 fits into 2200 5 times, leaving a remainder of 325.
Put 5 as the next digit of the answer. 
Result so far: 170929.5
The remainder is 325 after subtracting 1875 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Going ahead to step 10:
When dividing 3250 by 375, we get 8 with a remainder of 250.
Put 8 as the next digit of the answer. 
Result so far: 170929.58
If we subtract 3000 from 3250, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 11:
If we divide 2500 by 375, we get 6 and a remainder of 250.
Put 6 as the next digit of the answer. 
Result so far: 170929.586
If we take 2250 away from 2500, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

On to step 12:
375 can be fit into 2500 6 times, resulting in a remainder of 250.
Record the quotient 6 as the next digit in the result. 
Result so far: 170929.5866
If we subtract 2250 from 2500, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

The final result is 170929.5866 with a remainder of 0.0025.