840269 ÷ 9 
The aim is to understand the frequency of 9 in 840269.

Let's proceed to step 1:
The number 9 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 9

Moving on to step 2:
The number 9 fits into 84 9 times, leaving a remainder of 3.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 3 after subtracting 81 from 84.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 9

Step 3:
If we divide 30 by 9, we get 3 and a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 93.0
If we take 27 away from 30, we end up with 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 9

Step 4:
When dividing 32 by 9, we get 3 with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 933.0
Subtract 27 from 32 to get 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 9

Advancing to step 5:
When dividing 56 by 9, we get 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 9336.0
The remainder is 2 after subtracting 54 from 56.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 9

On to step 6:
29 divided by 9 is 3 with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 93363.0
Deduct 27 from 29 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.

Moving on to step 7:
20 divided by 9 is 2 with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 93363.2
Subtracting 18 from 20 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.

Advancing to step 8:
If we divide 20 by 9, we get 2 and a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 93363.22
If we take 18 away from 20, we end up 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.

The quotient of the division is 93363.22, and the remainder is 0.002.