301808 ÷ 4 
The aim is to understand the frequency of 4 in 301808.

Advancing to step 1:
If we divide 3 by 4, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 4

On to step 2:
When dividing 30 by 4, we get 7 with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 28 from 30 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 4

Advancing to step 3:
The number 4 fits into 21 5 times, leaving a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 75.0
Subtract 20 from 21 to get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 4

Moving on to step 4:
If we divide 18 by 4, we get 4 and a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 754.0
Subtract 16 from 18 to get 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 4

Moving on to step 5:
The number 4 fits into 20 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 7545.0
Subtract 20 from 20 to get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 4

Step 6:
If we divide 8 by 4, we get 2 and a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 75452.0
Deduct 8 from 8 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
When dividing 0 by 4, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 75452.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 75452.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 75452.0, and the remainder is 0.0.