537312 divided by 9 
The aim is to understand the frequency of 9 in 537312.

On to step 1:
9 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 9

Step 2:
9 can be fit into 53 5 times, resulting in a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 45 away from 53, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 9

Moving on to step 3:
If we divide 87 by 9, we get 9 and a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 59.0
Subtracting 81 from 87 leaves us with 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 9

Advancing to step 4:
When dividing 63 by 9, we get 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 597.0
Subtracting 63 from 63 leaves us with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 9

Let's proceed to step 5:
The number 9 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 5970.0
Subtract 0 from 1 to get 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 9

Let's proceed to step 6:
9 goes into 12 1 times with a remainder of 3.
The next digit of our result is 1. 
Result so far: 59701.0
If we take 9 away from 12, we end up with 3.
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 7:
When dividing 30 by 9, we get 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 59701.3
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.

Moving on to step 8:
9 goes into 30 3 times with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 59701.33
Subtracting 27 from 30 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final result is 59701.33 with a remainder of 0.003.