We divide 52405802 by 9
The aim is to understand the frequency of 9 in 52405802.

Step 1:
5 divided by 9 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 9

On to step 2:
52 divided by 9 is 5 with a remainder of 7.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 45 from 52 leaves us with 7.
Fetch the next digit (4) from the dividend, attach it to 7 and continue: 74 / 9

Advancing to step 3:
If we divide 74 by 9, we get 8 and a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 58.0
The remainder is 2 after subtracting 72 from 74.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 9

Moving on to step 4:
When dividing 20 by 9, we get 2 with a remainder of 2.
The next digit of our result is 2. 
Result so far: 582.0
If we take 18 away from 20, we end up with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 9

On to step 5:
When dividing 25 by 9, we get 2 with a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 5822.0
The remainder is 7 after subtracting 18 from 25.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 9

Moving on to step 6:
When dividing 78 by 9, we get 8 with a remainder of 6.
The next digit of our result is 8. 
Result so far: 58228.0
Deduct 72 from 78 and we're left with 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 9

Moving on to step 7:
When dividing 60 by 9, we get 6 with a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 582286.0
Deduct 54 from 60 and we're left with 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 9

Step 8:
9 can be fit into 62 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 5822866.0
Deduct 54 from 62 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
The number 9 fits into 80 8 times, leaving a remainder of 8.
The next digit of our result is 8. 
Result so far: 5822866.8
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
80 divided by 9 is 8 with a remainder of 8.
The next digit of our result is 8. 
Result so far: 5822866.88
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 5822866.88 with a remainder of 0.008.