We look at the division of 133887 by 42 
The aim is to understand the frequency of 42 in 133887.

Let's proceed to step 1:
42 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 42

Going ahead to step 2:
42 goes into 13 0 times with a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Append the next digit (3) from the dividend to 13 and continue with: 133 / 42

Going ahead to step 3:
133 divided by 42 is 3 with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 126 away from 133, we end up with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 42

Moving on to step 4:
If we divide 78 by 42, we get 1 and a remainder of 36.
Use 1 as the next digit of our solution. 
Result so far: 31.0
If we subtract 42 from 78, we get 36.
Bring next digit (8) of the dividend behind the 36 and repeat the process: 368 / 42

Moving on to step 5:
The number 42 fits into 368 8 times, leaving a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 318.0
Subtract 336 from 368 to get 32.
Include the next digit (7) from the dividend after 32, then repeat: 327 / 42

Moving on to step 6:
327 divided by 42 is 7 with a remainder of 33.
The next digit of our result is 7. 
Result so far: 3187.0
Subtracting 294 from 327 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 7:
When dividing 330 by 42, we get 7 with a remainder of 36.
The number 7 becomes the next digit in our result. 
Result so far: 3187.7
If we subtract 294 from 330, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 8:
If we divide 360 by 42, we get 8 and a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 3187.78
Subtract 336 from 360 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 9:
When dividing 240 by 42, we get 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 3187.785
The remainder is 30 after subtracting 210 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 10:
If we divide 300 by 42, we get 7 and a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 3187.7857
Subtract 294 from 300 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 11:
If we divide 60 by 42, we get 1 and a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 3187.78571
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 12:
When dividing 180 by 42, we get 4 with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 3187.785714
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 13:
The number 42 fits into 120 2 times, leaving a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 3187.7857142
The remainder is 36 after subtracting 84 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 14:
When dividing 360 by 42, we get 8 with a remainder of 24.
The next digit of our result is 8. 
Result so far: 3187.78571428
The remainder is 24 after subtracting 336 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

In conclusion, the division gives 3187.78571428 with a balance of 2.4e-08.