We look at the division of 12645435 by 175 
The aim is to understand the frequency of 175 in 12645435.

Step 1:
175 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 175

Going ahead to step 2:
12 divided by 175 is 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Grab the next digit (6) from the dividend, add it to 12, then carry on: 126 / 175

Let's proceed to step 3:
The number 175 fits into 126 0 times, leaving a remainder of 126.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 126 to get 126.
Fetch the next digit (4) from the dividend, attach it to 126 and continue: 1264 / 175

Advancing to step 4:
When dividing 1264 by 175, we get 7 with a remainder of 39.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 39 after subtracting 1225 from 1264.
Fetch the next digit (5) from the dividend, attach it to 39 and continue: 395 / 175

Advancing to step 5:
When dividing 395 by 175, we get 2 with a remainder of 45.
The number 2 becomes the next digit in our result. 
Result so far: 72.0
Subtracting 350 from 395 leaves us with 45.
Fetch the next digit (4) from the dividend, attach it to 45 and continue: 454 / 175

Moving on to step 6:
If we divide 454 by 175, we get 2 and a remainder of 104.
Put 2 as the next digit of the answer. 
Result so far: 722.0
Subtracting 350 from 454 leaves us with 104.
Append the next digit (3) from the dividend to 104 and continue with: 1043 / 175

Going ahead to step 7:
If we divide 1043 by 175, we get 5 and a remainder of 168.
The next digit of our result is 5. 
Result so far: 7225.0
If we take 875 away from 1043, we end up with 168.
Take the next digit (5) from the dividend and append it to 168, then repeat: 1685 / 175

On to step 8:
When dividing 1685 by 175, we get 9 with a remainder of 110.
Use 9 as the next digit of our solution. 
Result so far: 72259.0
Subtracting 1575 from 1685 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 9:
When dividing 1100 by 175, we get 6 with a remainder of 50.
Use 6 as the next digit of our solution. 
Result so far: 72259.6
If we subtract 1050 from 1100, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 10:
If we divide 500 by 175, we get 2 and a remainder of 150.
Record the quotient 2 as the next digit in the result. 
Result so far: 72259.62
Subtract 350 from 500 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 11:
175 can be fit into 1500 8 times, resulting in a remainder of 100.
Write down 8 as next digit of the result. 
Result so far: 72259.628
The remainder is 100 after subtracting 1400 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 12:
When dividing 1000 by 175, we get 5 with a remainder of 125.
Record the quotient 5 as the next digit in the result. 
Result so far: 72259.6285
If we subtract 875 from 1000, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

On to step 13:
175 can be fit into 1250 7 times, resulting in a remainder of 25.
Write down 7 as next digit of the result. 
Result so far: 72259.62857
Subtract 1225 from 1250 to 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.

Let's proceed to step 14:
When dividing 250 by 175, we get 1 with a remainder of 75.
Write down 1 as next digit of the result. 
Result so far: 72259.628571
The remainder is 75 after subtracting 175 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 15:
If we divide 750 by 175, we get 4 and a remainder of 50.
Write down 4 as next digit of the result. 
Result so far: 72259.6285714
If we subtract 700 from 750, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 16:
175 goes into 500 2 times with a remainder of 150.
The number 2 becomes the next digit in our result. 
Result so far: 72259.62857142
Subtract 350 from 500 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

The final result is 72259.62857142 with a remainder of 1.5e-07.