We look at the division of 115931 by 42 
The aim is to understand the frequency of 42 in 115931.

Let's proceed to step 1:
1 divided by 42 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 42

Advancing to step 2:
42 goes into 11 0 times with a remainder of 11.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 11, we end up with 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 42

Let's proceed to step 3:
115 divided by 42 is 2 with a remainder of 31.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 84 from 115 to get 31.
Append the next digit (9) from the dividend to 31 and continue with: 319 / 42

Moving on to step 4:
42 goes into 319 7 times with a remainder of 25.
Write down 7 as next digit of the result. 
Result so far: 27.0
If we subtract 294 from 319, we get 25.
Append the next digit (3) from the dividend to 25 and continue with: 253 / 42

Advancing to step 5:
42 goes into 253 6 times with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 276.0
Subtract 252 from 253 to get 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 42

Advancing to step 6:
If we divide 11 by 42, we get 0 and a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 2760.0
Deduct 0 from 11 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
110 divided by 42 is 2 with a remainder of 26.
Put 2 as the next digit of the answer. 
Result so far: 2760.2
If we take 84 away from 110, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 8:
When dividing 260 by 42, we get 6 with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 2760.26
If we subtract 252 from 260, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
42 can be fit into 80 1 times, resulting in a remainder of 38.
The next digit of our result is 1. 
Result so far: 2760.261
The remainder is 38 after subtracting 42 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 10:
380 divided by 42 is 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 2760.2619
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 11:
If we divide 20 by 42, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 2760.2619
If we take 0 away from 20, 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 12:
When dividing 200 by 42, we get 4 with a remainder of 32.
Use 4 as the next digit of our solution. 
Result so far: 2760.261904
Deduct 168 from 200 and we're left 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.

Step 13:
42 can be fit into 320 7 times, resulting in a remainder of 26.
Put 7 as the next digit of the answer. 
Result so far: 2760.2619047
If we take 294 away from 320, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 14:
42 can be fit into 260 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 2760.26190476
Subtracting 252 from 260 leaves us 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.

The final result is 2760.26190476 with a remainder of 8e-09.