999848 divided by 12 
The aim is to understand the frequency of 12 in 999848.

Advancing to step 1:
9 divided by 12 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 12

Step 2:
If we divide 99 by 12, we get 8 and a remainder of 3.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 96 from 99, we get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 12

Moving on to step 3:
39 divided by 12 is 3 with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 83.0
Subtract 36 from 39 to get 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 12

Moving on to step 4:
12 goes into 38 3 times with a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 833.0
Subtract 36 from 38 to get 2.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 12

Going ahead to step 5:
When dividing 24 by 12, we get 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 8332.0
Subtract 24 from 24 to get 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 12

Advancing to step 6:
When dividing 8 by 12, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 83320.0
Subtracting 0 from 8 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 7:
12 can be fit into 80 6 times, resulting in a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 83320.6
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 8:
12 goes into 80 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 83320.66
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 83320.66, with a leftover of 0.008.