We're dividing 646036 by 75 
The aim is to understand the frequency of 75 in 646036.

Going ahead to step 1:
If we divide 6 by 75, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 75

Going ahead to step 2:
When dividing 64 by 75, we get 0 with a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Fetch the next digit (6) from the dividend, attach it to 64 and continue: 646 / 75

Let's proceed to step 3:
75 goes into 646 8 times with a remainder of 46.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 600 from 646 to get 46.
Take the next digit (0) from the dividend and append it to 46, then repeat: 460 / 75

Let's proceed to step 4:
460 divided by 75 is 6 with a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 86.0
Subtracting 450 from 460 leaves us with 10.
Bring next digit (3) of the dividend behind the 10 and repeat the process: 103 / 75

Step 5:
75 goes into 103 1 times with a remainder of 28.
Put 1 as the next digit of the answer. 
Result so far: 861.0
Deduct 75 from 103 and we're left with 28.
Append the next digit (6) from the dividend to 28 and continue with: 286 / 75

Moving on to step 6:
75 can be fit into 286 3 times, resulting in a remainder of 61.
Record the quotient 3 as the next digit in the result. 
Result so far: 8613.0
Subtract 225 from 286 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 7:
The number 75 fits into 610 8 times, leaving a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 8613.8
Subtract 600 from 610 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
75 can be fit into 100 1 times, resulting in a remainder of 25.
The next digit of our result is 1. 
Result so far: 8613.81
If we subtract 75 from 100, 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.

Going ahead to step 9:
75 can be fit into 250 3 times, resulting in a remainder of 25.
The next digit of our result is 3. 
Result so far: 8613.813
The remainder is 25 after subtracting 225 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 10:
75 can be fit into 250 3 times, resulting in a remainder of 25.
Put 3 as the next digit of the answer. 
Result so far: 8613.8133
If we take 225 away from 250, we end up 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.

The final outcome is 8613.8133, with a leftover of 0.00025.