We look at the division of 868526 by 12 
The aim is to understand the frequency of 12 in 868526.

Step 1:
The number 12 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 12

Step 2:
86 divided by 12 is 7 with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 2 after subtracting 84 from 86.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 12

On to step 3:
12 can be fit into 28 2 times, resulting in a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 72.0
Deduct 24 from 28 and we're left with 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 12

Moving on to step 4:
The number 12 fits into 45 3 times, leaving a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 723.0
Deduct 36 from 45 and we're left with 9.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 12

Step 5:
12 goes into 92 7 times with a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 7237.0
Subtract 84 from 92 to get 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 12

Advancing to step 6:
12 goes into 86 7 times with a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 72377.0
Subtract 84 from 86 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
12 can be fit into 20 1 times, resulting in a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 72377.1
If we take 12 away from 20, we end up 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.

Advancing to step 8:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 72377.16
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
If we divide 80 by 12, we get 6 and a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 72377.166
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 72377.166, and the remainder is 0.0008.