378799 divided by 75 
The aim is to understand the frequency of 75 in 378799.

Step 1:
The number 75 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 75

Step 2:
When dividing 37 by 75, we get 0 with a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 37 after subtracting 0 from 37.
Append the next digit (8) from the dividend to 37 and continue with: 378 / 75

Going ahead to step 3:
If we divide 378 by 75, we get 5 and a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 375 from 378 and we're left with 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 75

Step 4:
37 divided by 75 is 0 with a remainder of 37.
Write down 0 as next digit of the result. 
Result so far: 50.0
If we take 0 away from 37, we end up with 37.
Include the next digit (9) from the dividend after 37, then repeat: 379 / 75

On to step 5:
The number 75 fits into 379 5 times, leaving a remainder of 4.
Put 5 as the next digit of the answer. 
Result so far: 505.0
Subtracting 375 from 379 leaves us with 4.
Grab the next digit (9) from the dividend, add it to 4, then carry on: 49 / 75

Moving on to step 6:
When dividing 49 by 75, we get 0 with a remainder of 49.
The number 0 becomes the next digit in our result. 
Result so far: 5050.0
Deduct 0 from 49 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 7:
75 can be fit into 490 6 times, resulting in a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 5050.6
Deduct 450 from 490 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 8:
75 can be fit into 400 5 times, resulting in a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 5050.65
Subtracting 375 from 400 leaves us 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.

Let's proceed to step 9:
75 can be fit into 250 3 times, resulting in a remainder of 25.
Write down 3 as next digit of the result. 
Result so far: 5050.653
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.

Moving on to step 10:
250 divided by 75 is 3 with a remainder of 25.
The next digit of our result is 3. 
Result so far: 5050.6533
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.

The quotient of the division is 5050.6533, and the remainder is 0.00025.