We're dividing 519038 by 12 
The aim is to understand the frequency of 12 in 519038.

Moving on to step 1:
12 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 12

On to step 2:
12 goes into 51 4 times with a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 48 away from 51, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 12

Step 3:
12 can be fit into 39 3 times, resulting in a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
The remainder is 3 after subtracting 36 from 39.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 12

Going ahead to step 4:
The number 12 fits into 30 2 times, leaving a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 432.0
The remainder is 6 after subtracting 24 from 30.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 12

Moving on to step 5:
When dividing 63 by 12, we get 5 with a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 4325.0
Deduct 60 from 63 and we're left with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 12

Advancing to step 6:
When dividing 38 by 12, we get 3 with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 43253.0
Subtract 36 from 38 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.

Advancing to step 7:
The number 12 fits into 20 1 times, leaving a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 43253.1
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.

Moving on to step 8:
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: 43253.16
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.

Advancing to step 9:
If we divide 80 by 12, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 43253.166
If we subtract 72 from 80, we 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.

The final result is 43253.166 with a remainder of 0.0008.