404404 ÷ 42 
The aim is to understand the frequency of 42 in 404404.

Going ahead to step 1:
The number 42 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 42

Let's proceed to step 2:
42 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Bring next digit (4) of the dividend behind the 40 and repeat the process: 404 / 42

Advancing to step 3:
42 can be fit into 404 9 times, resulting in a remainder of 26.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 378 from 404, we get 26.
Fetch the next digit (4) from the dividend, attach it to 26 and continue: 264 / 42

Advancing to step 4:
If we divide 264 by 42, we get 6 and a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 96.0
If we subtract 252 from 264, we get 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 42

Going ahead to step 5:
42 goes into 120 2 times with a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 962.0
Deduct 84 from 120 and we're left with 36.
Include the next digit (4) from the dividend after 36, then repeat: 364 / 42

Let's proceed to step 6:
When dividing 364 by 42, we get 8 with a remainder of 28.
Write down 8 as next digit of the result. 
Result so far: 9628.0
If we subtract 336 from 364, we get 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:
42 goes into 280 6 times with a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 9628.6
The remainder is 28 after subtracting 252 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 8:
42 goes into 280 6 times with a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 9628.66
The remainder is 28 after subtracting 252 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 9628.66 with a remaining 0.028.