683137 ÷ 42 
The aim is to understand the frequency of 42 in 683137.

Let's proceed to step 1:
When dividing 6 by 42, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 42

Let's proceed to step 2:
The number 42 fits into 68 1 times, leaving a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 42 from 68 to get 26.
Include the next digit (3) from the dividend after 26, then repeat: 263 / 42

Advancing to step 3:
The number 42 fits into 263 6 times, leaving a remainder of 11.
The next digit of our result is 6. 
Result so far: 16.0
The remainder is 11 after subtracting 252 from 263.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 42

On to step 4:
When dividing 111 by 42, we get 2 with a remainder of 27.
Write down 2 as next digit of the result. 
Result so far: 162.0
Subtracting 84 from 111 leaves us with 27.
Include the next digit (3) from the dividend after 27, then repeat: 273 / 42

Let's proceed to step 5:
If we divide 273 by 42, we get 6 and a remainder of 21.
Put 6 as the next digit of the answer. 
Result so far: 1626.0
The remainder is 21 after subtracting 252 from 273.
Include the next digit (7) from the dividend after 21, then repeat: 217 / 42

Let's proceed to step 6:
The number 42 fits into 217 5 times, leaving a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 16265.0
If we subtract 210 from 217, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 7:
If we divide 70 by 42, we get 1 and a remainder of 28.
The next digit of our result is 1. 
Result so far: 16265.1
If we subtract 42 from 70, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 8:
280 divided by 42 is 6 with a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 16265.16
The remainder is 28 after subtracting 252 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 9:
When dividing 280 by 42, we get 6 with a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 16265.166
Deduct 252 from 280 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 16265.166, with a leftover of 0.0028.