303403 ÷ 4 
The aim is to understand the frequency of 4 in 303403.

Let's proceed to step 1:
4 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 4

On to step 2:
4 can be fit into 30 7 times, resulting in a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 28 from 30 to get 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 4

Moving on to step 3:
If we divide 23 by 4, we get 5 and a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 75.0
If we take 20 away from 23, we end up with 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 4

On to step 4:
If we divide 34 by 4, we get 8 and a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 758.0
Deduct 32 from 34 and we're left with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 4

Moving on to step 5:
When dividing 20 by 4, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 7585.0
If we subtract 20 from 20, we get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 4

Moving on to step 6:
4 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 75850.0
Subtract 0 from 3 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
4 goes into 30 7 times with a remainder of 2.
The next digit of our result is 7. 
Result so far: 75850.7
Subtract 28 from 30 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
If we divide 20 by 4, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 75850.75
Deduct 20 from 20 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.

Advancing to step 9:
If we divide 0 by 4, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 75850.75
Deduct 0 from 0 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.

Advancing to step 10:
0 divided by 4 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 75850.75
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.

After the division, we end up with 75850.75 and a remainder of 0.0.