130930 divided by 12 
The aim is to understand the frequency of 12 in 130930.

On to step 1:
12 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 12

Advancing to step 2:
12 can be fit into 13 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 12 away from 13, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 12

Advancing to step 3:
10 divided by 12 is 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we take 0 away from 10, we end up with 10.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 12

On to step 4:
12 can be fit into 109 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 109.0
The remainder is 1 after subtracting 108 from 109.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 12

On to step 5:
13 divided by 12 is 1 with a remainder of 1.
The next digit of our result is 1. 
Result so far: 1091.0
Subtracting 12 from 13 leaves us with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 12

Step 6:
12 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 10910.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 7:
100 divided by 12 is 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 10910.8
If we take 96 away from 100, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 8:
The number 12 fits into 40 3 times, leaving a remainder of 4.
The next digit of our result is 3. 
Result so far: 10910.83
If we take 36 away from 40, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 10910.833
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 10910.833, with a leftover of 0.0004.