We look at the division of 985159 by 12 
The aim is to understand the frequency of 12 in 985159.

Moving on to step 1:
12 can be fit into 9 0 times, resulting in a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 12

Going ahead to step 2:
12 goes into 98 8 times with a remainder of 2.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 2 after subtracting 96 from 98.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 12

Going ahead to step 3:
12 goes into 25 2 times with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 82.0
The remainder is 1 after subtracting 24 from 25.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 12

Advancing to step 4:
11 divided by 12 is 0 with a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 820.0
Deduct 0 from 11 and we're left with 11.
Take the next digit (5) from the dividend and append it to 11, then repeat: 115 / 12

Advancing to step 5:
When dividing 115 by 12, we get 9 with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 8209.0
Subtracting 108 from 115 leaves us with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 12

Going ahead to step 6:
12 can be fit into 79 6 times, resulting in a remainder of 7.
Put 6 as the next digit of the answer. 
Result so far: 82096.0
If we take 72 away from 79, we end up 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.

Let's proceed to step 7:
The number 12 fits into 70 5 times, leaving a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 82096.5
The remainder is 10 after subtracting 60 from 70.
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 8:
12 can be fit into 100 8 times, resulting in a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 82096.58
Subtract 96 from 100 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
12 goes into 40 3 times with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 82096.583
Subtract 36 from 40 to get 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 10:
If we divide 40 by 12, we get 3 and a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 82096.5833
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.

The final outcome is 82096.5833, with a leftover of 4e-05.