628511 divided by 75 
The aim is to understand the frequency of 75 in 628511.

On to step 1:
When dividing 6 by 75, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 75

Step 2:
The number 75 fits into 62 0 times, leaving a remainder of 62.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 62 leaves us with 62.
Fetch the next digit (8) from the dividend, attach it to 62 and continue: 628 / 75

Going ahead to step 3:
75 can be fit into 628 8 times, resulting in a remainder of 28.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 600 from 628 to get 28.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 75

On to step 4:
The number 75 fits into 285 3 times, leaving a remainder of 60.
The number 3 becomes the next digit in our result. 
Result so far: 83.0
Subtracting 225 from 285 leaves us with 60.
Grab the next digit (1) from the dividend, add it to 60, then carry on: 601 / 75

Step 5:
The number 75 fits into 601 8 times, leaving a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 838.0
Subtract 600 from 601 to get 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 75

Going ahead to step 6:
11 divided by 75 is 0 with a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 8380.0
If we take 0 away from 11, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
If we divide 110 by 75, we get 1 and a remainder of 35.
Put 1 as the next digit of the answer. 
Result so far: 8380.1
If we subtract 75 from 110, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 8:
75 goes into 350 4 times with a remainder of 50.
The next digit of our result is 4. 
Result so far: 8380.14
Deduct 300 from 350 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
75 goes into 500 6 times with a remainder of 50.
Use 6 as the next digit of our solution. 
Result so far: 8380.146
Deduct 450 from 500 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
75 can be fit into 500 6 times, resulting in a remainder of 50.
Record the quotient 6 as the next digit in the result. 
Result so far: 8380.1466
Subtracting 450 from 500 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final result is 8380.1466 with a remainder of 0.0005.