159595 divided by 9 
The aim is to understand the frequency of 9 in 159595.

Step 1:
9 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 9

Step 2:
The number 9 fits into 15 1 times, leaving a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 9 from 15 leaves us with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 9

Moving on to step 3:
When dividing 69 by 9, we get 7 with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Deduct 63 from 69 and we're left with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 9

Step 4:
When dividing 65 by 9, we get 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 177.0
If we subtract 63 from 65, we get 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 9

Going ahead to step 5:
When dividing 29 by 9, we get 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 1773.0
If we subtract 27 from 29, we get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 9

Advancing to step 6:
The number 9 fits into 25 2 times, leaving a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 17732.0
Deduct 18 from 25 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
When dividing 70 by 9, we get 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 17732.7
Subtracting 63 from 70 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 8:
When dividing 70 by 9, we get 7 with a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 17732.77
If we subtract 63 from 70, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

After the division, we end up with 17732.77 and a remainder of 0.007.