We're dividing 615400 by 12 
The aim is to understand the frequency of 12 in 615400.

Advancing to step 1:
The number 12 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 12

Let's proceed to step 2:
12 can be fit into 61 5 times, resulting in a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtract 60 from 61 to get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 12

Step 3:
12 can be fit into 15 1 times, resulting in a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 51.0
If we subtract 12 from 15, we get 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 12

Advancing to step 4:
The number 12 fits into 34 2 times, leaving a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 512.0
Subtract 24 from 34 to get 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 12

Going ahead to step 5:
100 divided by 12 is 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 5128.0
If we subtract 96 from 100, we get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 12

Let's proceed to step 6:
When dividing 40 by 12, we get 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 51283.0
Subtracting 36 from 40 leaves us 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.

Going ahead to step 7:
If we divide 40 by 12, we get 3 and a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 51283.3
Subtracting 36 from 40 leaves us 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.

Moving on to step 8:
40 divided by 12 is 3 with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 51283.33
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.

After the division, we end up with 51283.33 and a remainder of 0.004.