We look at the division of 748931 by 42 
The aim is to understand the frequency of 42 in 748931.

On to step 1:
42 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 42

Step 2:
If we divide 74 by 42, we get 1 and a remainder of 32.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 32 after subtracting 42 from 74.
Take the next digit (8) from the dividend and append it to 32, then repeat: 328 / 42

Step 3:
42 can be fit into 328 7 times, resulting in a remainder of 34.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 294 from 328 to get 34.
Take the next digit (9) from the dividend and append it to 34, then repeat: 349 / 42

On to step 4:
349 divided by 42 is 8 with a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 178.0
Subtract 336 from 349 to get 13.
Take the next digit (3) from the dividend and append it to 13, then repeat: 133 / 42

On to step 5:
The number 42 fits into 133 3 times, leaving a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 1783.0
If we take 126 away from 133, we end up with 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 42

Let's proceed to step 6:
When dividing 71 by 42, we get 1 with a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 17831.0
If we subtract 42 from 71, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
42 can be fit into 290 6 times, resulting in a remainder of 38.
Use 6 as the next digit of our solution. 
Result so far: 17831.6
If we take 252 away from 290, we end up with 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 8:
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: 17831.69
The remainder is 2 after subtracting 378 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
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: 17831.69
Deduct 0 from 20 and we're left 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.

On to step 10:
200 divided by 42 is 4 with a remainder of 32.
The next digit of our result is 4. 
Result so far: 17831.6904
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.

Advancing to step 11:
42 can be fit into 320 7 times, resulting in a remainder of 26.
Record the quotient 7 as the next digit in the result. 
Result so far: 17831.69047
Deduct 294 from 320 and we're left 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.

On to step 12:
42 can be fit into 260 6 times, resulting in a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 17831.690476
The remainder is 8 after subtracting 252 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 13:
If we divide 80 by 42, we get 1 and a remainder of 38.
Write down 1 as next digit of the result. 
Result so far: 17831.6904761
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 14:
380 divided by 42 is 9 with a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 17831.69047619
The remainder is 2 after subtracting 378 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

In conclusion, the division gives 17831.69047619 with a balance of 2e-09.