743303 ÷ 9 
The aim is to understand the frequency of 9 in 743303.

Advancing to step 1:
The number 9 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 9

Going ahead to step 2:
The number 9 fits into 74 8 times, leaving a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 2 after subtracting 72 from 74.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 9

Step 3:
9 goes into 23 2 times with a remainder of 5.
The next digit of our result is 2. 
Result so far: 82.0
If we take 18 away from 23, we end up with 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 9

Moving on to step 4:
9 goes into 53 5 times with a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 825.0
If we subtract 45 from 53, we get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 9

Step 5:
The number 9 fits into 80 8 times, leaving a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 8258.0
The remainder is 8 after subtracting 72 from 80.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 9

Moving on to step 6:
9 goes into 83 9 times with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 82589.0
Subtracting 81 from 83 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
If we divide 20 by 9, we get 2 and a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 82589.2
Deduct 18 from 20 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
When dividing 20 by 9, we get 2 with a remainder of 2.
The next digit of our result is 2. 
Result so far: 82589.22
The remainder is 2 after subtracting 18 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 82589.22 with a remainder of 0.002.