731602 ÷ 9 
The aim is to understand the frequency of 9 in 731602.

On to step 1:
7 divided by 9 is 0 with 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.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 9

Advancing to step 2:
The number 9 fits into 73 8 times, leaving a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 72 from 73 leaves us with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 9

Going ahead to step 3:
11 divided by 9 is 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 81.0
The remainder is 2 after subtracting 9 from 11.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 9

Advancing to step 4:
9 can be fit into 26 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 812.0
Deduct 18 from 26 and we're left with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 9

Step 5:
80 divided by 9 is 8 with a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 8128.0
If we take 72 away from 80, we end up with 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 9

Step 6:
If we divide 82 by 9, we get 9 and a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 81289.0
Deduct 81 from 82 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
9 can be fit into 10 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 81289.1
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 8:
9 can be fit into 10 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 81289.11
If we take 9 away from 10, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 81289.11, with a leftover of 0.001.