304011 ÷ 42 
The aim is to understand the frequency of 42 in 304011.

On to step 1:
When dividing 3 by 42, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 42

Advancing to step 2:
When dividing 30 by 42, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Grab the next digit (4) from the dividend, add it to 30, then carry on: 304 / 42

Advancing to step 3:
42 goes into 304 7 times with a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 294 from 304 leaves us with 10.
Bring next digit (0) of the dividend behind the 10 and repeat the process: 100 / 42

On to step 4:
42 can be fit into 100 2 times, resulting in a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 72.0
Deduct 84 from 100 and we're left with 16.
Bring next digit (1) of the dividend behind the 16 and repeat the process: 161 / 42

Going ahead to step 5:
161 divided by 42 is 3 with a remainder of 35.
Put 3 as the next digit of the answer. 
Result so far: 723.0
Deduct 126 from 161 and we're left with 35.
Fetch the next digit (1) from the dividend, attach it to 35 and continue: 351 / 42

On to step 6:
When dividing 351 by 42, we get 8 with a remainder of 15.
Record the quotient 8 as the next digit in the result. 
Result so far: 7238.0
The remainder is 15 after subtracting 336 from 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 7:
42 goes into 150 3 times with a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 7238.3
Deduct 126 from 150 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 8:
When dividing 240 by 42, we get 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 7238.35
If we subtract 210 from 240, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 9:
42 can be fit into 300 7 times, resulting in a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 7238.357
If we subtract 294 from 300, we 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.

On to step 10:
If we divide 60 by 42, we get 1 and a remainder of 18.
The next digit of our result is 1. 
Result so far: 7238.3571
If we subtract 42 from 60, we 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.

On to step 11:
When dividing 180 by 42, we get 4 with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 7238.35714
If we take 168 away from 180, we end up with 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 12:
The number 42 fits into 120 2 times, leaving a remainder of 36.
Use 2 as the next digit of our solution. 
Result so far: 7238.357142
If we subtract 84 from 120, 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.

Let's proceed to step 13:
If we divide 360 by 42, we get 8 and a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 7238.3571428
Deduct 336 from 360 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 14:
42 can be fit into 240 5 times, resulting in a remainder of 30.
The next digit of our result is 5. 
Result so far: 7238.35714285
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.

The final outcome is 7238.35714285, with a leftover of 3e-08.