We're dividing 807968 by 42 
The aim is to understand the frequency of 42 in 807968.

Step 1:
When dividing 8 by 42, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 42

Let's proceed to step 2:
The number 42 fits into 80 1 times, leaving a remainder of 38.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 42 from 80 leaves us with 38.
Take the next digit (7) from the dividend and append it to 38, then repeat: 387 / 42

Advancing to step 3:
387 divided by 42 is 9 with a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
If we subtract 378 from 387, we get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 42

On to step 4:
42 can be fit into 99 2 times, resulting in a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 192.0
The remainder is 15 after subtracting 84 from 99.
Include the next digit (6) from the dividend after 15, then repeat: 156 / 42

Advancing to step 5:
The number 42 fits into 156 3 times, leaving a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 1923.0
Subtracting 126 from 156 leaves us with 30.
Take the next digit (8) from the dividend and append it to 30, then repeat: 308 / 42

Going ahead to step 6:
If we divide 308 by 42, we get 7 and a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 19237.0
Subtract 294 from 308 to 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.

On to step 7:
If we divide 140 by 42, we get 3 and a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 19237.3
If we take 126 away from 140, we end up 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.

On to step 8:
When dividing 140 by 42, we get 3 with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 19237.33
Subtract 126 from 140 to 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.

Our division results in 19237.33 with a remaining 0.014.