828988 divided by 12 
The aim is to understand the frequency of 12 in 828988.

Step 1:
8 divided by 12 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 12

Going ahead to step 2:
The number 12 fits into 82 6 times, leaving a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 10 after subtracting 72 from 82.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 12

Step 3:
108 divided by 12 is 9 with a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 69.0
Deduct 108 from 108 and we're left with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 12

On to step 4:
When dividing 9 by 12, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 690.0
If we take 0 away from 9, we end up with 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 12

Going ahead to step 5:
12 can be fit into 98 8 times, resulting in a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 6908.0
The remainder is 2 after subtracting 96 from 98.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 12

Moving on to step 6:
The number 12 fits into 28 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 69082.0
If we take 24 away from 28, 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 7:
12 goes into 40 3 times with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 69082.3
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.

Let's proceed to step 8:
If we divide 40 by 12, we get 3 and a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 69082.33
If we subtract 36 from 40, we 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.

The final result is 69082.33 with a remainder of 0.004.