We're dividing 76407528 by 9 
The aim is to understand the frequency of 9 in 76407528.

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 take 0 away from 7, we end up with 7.
Bring next digit (6) of the dividend behind the 7 and repeat the process: 76 / 9

Advancing to step 2:
When dividing 76 by 9, we get 8 with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 72 from 76 to get 4.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 9

Let's proceed to step 3:
The number 9 fits into 44 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 84.0
Subtracting 36 from 44 leaves us with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 9

Going ahead to step 4:
If we divide 80 by 9, we get 8 and a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 848.0
If we subtract 72 from 80, we get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 9

Going ahead to step 5:
87 divided by 9 is 9 with a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 8489.0
Deduct 81 from 87 and we're left with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 9

Step 6:
If we divide 65 by 9, we get 7 and a remainder of 2.
The next digit of our result is 7. 
Result so far: 84897.0
The remainder is 2 after subtracting 63 from 65.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 9

Step 7:
22 divided by 9 is 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 848972.0
Subtract 18 from 22 to get 4.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 9

Step 8:
The number 9 fits into 48 5 times, leaving a remainder of 3.
The next digit of our result is 5. 
Result so far: 8489725.0
The remainder is 3 after subtracting 45 from 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 9:
9 goes into 30 3 times with a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 8489725.3
The remainder is 3 after subtracting 27 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 10:
9 goes into 30 3 times with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 8489725.33
If we subtract 27 from 30, we 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.

Our division results in 8489725.33 with a remaining 0.003.