We're dividing 490670 by 12 
The aim is to understand the frequency of 12 in 490670.

Going ahead to step 1:
The number 12 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 12

Going ahead to step 2:
The number 12 fits into 49 4 times, leaving a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 48 from 49 leaves us with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 12

Let's proceed to step 3:
When dividing 10 by 12, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 40.0
The remainder is 10 after subtracting 0 from 10.
Take the next digit (6) from the dividend and append it to 10, then repeat: 106 / 12

Let's proceed to step 4:
12 can be fit into 106 8 times, resulting in a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 408.0
If we take 96 away from 106, we end up with 10.
Take the next digit (7) from the dividend and append it to 10, then repeat: 107 / 12

Let's proceed to step 5:
107 divided by 12 is 8 with a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 4088.0
If we subtract 96 from 107, we get 11.
Include the next digit (0) from the dividend after 11, then repeat: 110 / 12

Going ahead to step 6:
12 can be fit into 110 9 times, resulting in a remainder of 2.
The next digit of our result is 9. 
Result so far: 40889.0
The remainder is 2 after subtracting 108 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
20 divided by 12 is 1 with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 40889.1
Subtracting 12 from 20 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.

Going ahead to step 8:
If we divide 80 by 12, we get 6 and a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 40889.16
If we take 72 away from 80, 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.

On to step 9:
12 goes into 80 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 40889.166
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.

Our division results in 40889.166 with a remaining 0.0008.