We divide 280505 by 75
The aim is to understand the frequency of 75 in 280505.

On to step 1:
The number 75 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 75

Step 2:
When dividing 28 by 75, we get 0 with a remainder of 28.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Take the next digit (0) from the dividend and append it to 28, then repeat: 280 / 75

Going ahead to step 3:
If we divide 280 by 75, we get 3 and a remainder of 55.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 55 after subtracting 225 from 280.
Append the next digit (5) from the dividend to 55 and continue with: 555 / 75

Advancing to step 4:
When dividing 555 by 75, we get 7 with a remainder of 30.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
If we take 525 away from 555, we end up with 30.
Grab the next digit (0) from the dividend, add it to 30, then carry on: 300 / 75

Let's proceed to step 5:
The number 75 fits into 300 4 times, leaving a remainder of 0.
The next digit of our result is 4. 
Result so far: 374.0
If we subtract 300 from 300, we get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 75

On to step 6:
The number 75 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 3740.0
If we take 0 away from 5, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
If we divide 50 by 75, we get 0 and a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 3740.0
Deduct 0 from 50 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.

Moving on to step 8:
The number 75 fits into 500 6 times, leaving a remainder of 50.
Put 6 as the next digit of the answer. 
Result so far: 3740.06
If we take 450 away from 500, we end up 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.

Step 9:
If we divide 500 by 75, we get 6 and a remainder of 50.
The number 6 becomes the next digit in our result. 
Result so far: 3740.066
If we take 450 away from 500, we end up 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.

After the division, we end up with 3740.066 and a remainder of 0.005.