3885794 ÷ 665 
The aim is to understand the frequency of 665 in 3885794.

On to step 1:
The number 665 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 665

Step 2:
When dividing 38 by 665, we get 0 with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 38 leaves us with 38.
Append the next digit (8) from the dividend to 38 and continue with: 388 / 665

Step 3:
665 goes into 388 0 times with a remainder of 388.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 388 after subtracting 0 from 388.
Grab the next digit (5) from the dividend, add it to 388, then carry on: 3885 / 665

On to step 4:
When dividing 3885 by 665, we get 5 with a remainder of 560.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 3325 away from 3885, we end up with 560.
Append the next digit (7) from the dividend to 560 and continue with: 5607 / 665

Step 5:
When dividing 5607 by 665, we get 8 with a remainder of 287.
The next digit of our result is 8. 
Result so far: 58.0
If we subtract 5320 from 5607, we get 287.
Append the next digit (9) from the dividend to 287 and continue with: 2879 / 665

On to step 6:
The number 665 fits into 2879 4 times, leaving a remainder of 219.
Put 4 as the next digit of the answer. 
Result so far: 584.0
If we subtract 2660 from 2879, we get 219.
Take the next digit (4) from the dividend and append it to 219, then repeat: 2194 / 665

Going ahead to step 7:
665 goes into 2194 3 times with a remainder of 199.
Record the quotient 3 as the next digit in the result. 
Result so far: 5843.0
If we take 1995 away from 2194, we end up with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

On to step 8:
1990 divided by 665 is 2 with a remainder of 660.
The number 2 becomes the next digit in our result. 
Result so far: 5843.2
Subtract 1330 from 1990 to get 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Going ahead to step 9:
665 can be fit into 6600 9 times, resulting in a remainder of 615.
Use 9 as the next digit of our solution. 
Result so far: 5843.29
If we take 5985 away from 6600, we end up with 615.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6150, and continue the process.

Let's proceed to step 10:
665 goes into 6150 9 times with a remainder of 165.
Put 9 as the next digit of the answer. 
Result so far: 5843.299
Subtracting 5985 from 6150 leaves us with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

The final outcome is 5843.299, with a leftover of 0.0165.