We divide 550603 by 75
The aim is to understand the frequency of 75 in 550603.

Going ahead to step 1:
When dividing 5 by 75, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 75

Let's proceed to step 2:
The number 75 fits into 55 0 times, leaving a remainder of 55.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 55, we get 55.
Take the next digit (0) from the dividend and append it to 55, then repeat: 550 / 75

Step 3:
When dividing 550 by 75, we get 7 with a remainder of 25.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 525 from 550 leaves us with 25.
Bring next digit (6) of the dividend behind the 25 and repeat the process: 256 / 75

On to step 4:
The number 75 fits into 256 3 times, leaving a remainder of 31.
The number 3 becomes the next digit in our result. 
Result so far: 73.0
Subtracting 225 from 256 leaves us with 31.
Grab the next digit (0) from the dividend, add it to 31, then carry on: 310 / 75

Going ahead to step 5:
75 can be fit into 310 4 times, resulting in a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 734.0
Deduct 300 from 310 and we're left with 10.
Fetch the next digit (3) from the dividend, attach it to 10 and continue: 103 / 75

On to step 6:
The number 75 fits into 103 1 times, leaving a remainder of 28.
Record the quotient 1 as the next digit in the result. 
Result so far: 7341.0
Subtracting 75 from 103 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 7:
If we divide 280 by 75, we get 3 and a remainder of 55.
Record the quotient 3 as the next digit in the result. 
Result so far: 7341.3
If we take 225 away from 280, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 8:
75 goes into 550 7 times with a remainder of 25.
Write down 7 as next digit of the result. 
Result so far: 7341.37
If we take 525 away from 550, 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.

Moving on to step 9:
When dividing 250 by 75, we get 3 with a remainder of 25.
Put 3 as the next digit of the answer. 
Result so far: 7341.373
Subtract 225 from 250 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.

Going ahead to step 10:
The number 75 fits into 250 3 times, leaving a remainder of 25.
The next digit of our result is 3. 
Result so far: 7341.3733
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.

After the division, we end up with 7341.3733 and a remainder of 0.00025.