We look at the division of 553574 by 42 
The aim is to understand the frequency of 42 in 553574.

Moving on to step 1:
The number 42 fits into 5 0 times, leaving 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.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 42

Going ahead to step 2:
When dividing 55 by 42, we get 1 with a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 42 away from 55, we end up with 13.
Append the next digit (3) from the dividend to 13 and continue with: 133 / 42

Moving on to step 3:
When dividing 133 by 42, we get 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we take 126 away from 133, we end up with 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 42

Advancing to step 4:
75 divided by 42 is 1 with a remainder of 33.
The number 1 becomes the next digit in our result. 
Result so far: 131.0
Subtract 42 from 75 to get 33.
Append the next digit (7) from the dividend to 33 and continue with: 337 / 42

Going ahead to step 5:
42 can be fit into 337 8 times, resulting in a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 1318.0
Subtracting 336 from 337 leaves us with 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 42

Let's proceed to step 6:
If we divide 14 by 42, we get 0 and a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 13180.0
If we subtract 0 from 14, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
If we divide 140 by 42, we get 3 and a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 13180.3
If we subtract 126 from 140, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
If we divide 140 by 42, we get 3 and a remainder of 14.
The next digit of our result is 3. 
Result so far: 13180.33
Subtracting 126 from 140 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final result is 13180.33 with a remainder of 0.014.