616420 ÷ 42 
The aim is to understand the frequency of 42 in 616420.

Let's proceed to step 1:
If we divide 6 by 42, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 42

On to step 2:
42 goes into 61 1 times with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 42 from 61 and we're left with 19.
Bring next digit (6) of the dividend behind the 19 and repeat the process: 196 / 42

Moving on to step 3:
The number 42 fits into 196 4 times, leaving a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 14.0
Subtract 168 from 196 to get 28.
Grab the next digit (4) from the dividend, add it to 28, then carry on: 284 / 42

Advancing to step 4:
If we divide 284 by 42, we get 6 and a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 146.0
If we take 252 away from 284, we end up with 32.
Append the next digit (2) from the dividend to 32 and continue with: 322 / 42

Step 5:
When dividing 322 by 42, we get 7 with a remainder of 28.
Put 7 as the next digit of the answer. 
Result so far: 1467.0
Subtract 294 from 322 to get 28.
Bring next digit (0) of the dividend behind the 28 and repeat the process: 280 / 42

Step 6:
280 divided by 42 is 6 with a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 14676.0
If we subtract 252 from 280, 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.

Let's proceed to step 7:
280 divided by 42 is 6 with a remainder of 28.
Put 6 as the next digit of the answer. 
Result so far: 14676.6
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.

On to step 8:
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: 14676.66
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.

Our division results in 14676.66 with a remaining 0.028.