We look at the division of 442940 by 12 
The aim is to understand the frequency of 12 in 442940.

Step 1:
12 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (4) of the dividend behind the 4 and repeat the process: 44 / 12

Advancing to step 2:
The number 12 fits into 44 3 times, leaving a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 36 from 44 and we're left with 8.
Bring next digit (2) of the dividend behind the 8 and repeat the process: 82 / 12

On to step 3:
If we divide 82 by 12, we get 6 and a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 36.0
If we subtract 72 from 82, we get 10.
Bring next digit (9) of the dividend behind the 10 and repeat the process: 109 / 12

Advancing to step 4:
If we divide 109 by 12, we get 9 and a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 369.0
Subtract 108 from 109 to get 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 12

On to step 5:
If we divide 14 by 12, we get 1 and a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 3691.0
Subtract 12 from 14 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 12

Step 6:
12 goes into 20 1 times with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 36911.0
The remainder is 8 after subtracting 12 from 20.
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 7:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 36911.6
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.

On to step 8:
If we divide 80 by 12, we get 6 and a remainder of 8.
The next digit of our result is 6. 
Result so far: 36911.66
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.

In conclusion, the division gives 36911.66 with a balance of 0.008.