We look at the division of 915371 by 42 
The aim is to understand the frequency of 42 in 915371.

Going ahead to step 1:
42 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 42

Moving on to step 2:
When dividing 91 by 42, we get 2 with a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 84 away from 91, we end up with 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 42

Step 3:
42 can be fit into 75 1 times, resulting in a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtracting 42 from 75 leaves us with 33.
Bring next digit (3) of the dividend behind the 33 and repeat the process: 333 / 42

Going ahead to step 4:
333 divided by 42 is 7 with a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 217.0
The remainder is 39 after subtracting 294 from 333.
Append the next digit (7) from the dividend to 39 and continue with: 397 / 42

Step 5:
If we divide 397 by 42, we get 9 and a remainder of 19.
Record the quotient 9 as the next digit in the result. 
Result so far: 2179.0
The remainder is 19 after subtracting 378 from 397.
Bring next digit (1) of the dividend behind the 19 and repeat the process: 191 / 42

Let's proceed to step 6:
42 can be fit into 191 4 times, resulting in a remainder of 23.
Use 4 as the next digit of our solution. 
Result so far: 21794.0
Subtract 168 from 191 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 7:
230 divided by 42 is 5 with a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 21794.5
If we take 210 away from 230, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
The number 42 fits into 200 4 times, leaving a remainder of 32.
Write down 4 as next digit of the result. 
Result so far: 21794.54
Subtract 168 from 200 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 9:
42 goes into 320 7 times with a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 21794.547
Subtract 294 from 320 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 10:
260 divided by 42 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 21794.5476
Deduct 252 from 260 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 11:
When dividing 80 by 42, we get 1 with a remainder of 38.
Record the quotient 1 as the next digit in the result. 
Result so far: 21794.54761
If we subtract 42 from 80, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 12:
42 can be fit into 380 9 times, resulting in a remainder of 2.
The next digit of our result is 9. 
Result so far: 21794.547619
If we take 378 away from 380, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 13:
When dividing 20 by 42, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 21794.547619
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 14:
When dividing 200 by 42, we get 4 with a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 21794.54761904
Subtracting 168 from 200 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Our division results in 21794.54761904 with a remaining 3.2e-08.