We divide 579370 by 12
The aim is to understand the frequency of 12 in 579370.

Advancing to step 1:
12 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 12

Moving on to step 2:
12 goes into 57 4 times with a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 48 from 57, we get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 12

Let's proceed to step 3:
99 divided by 12 is 8 with a remainder of 3.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
Subtract 96 from 99 to get 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 12

Let's proceed to step 4:
The number 12 fits into 33 2 times, leaving a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 482.0
Subtracting 24 from 33 leaves us with 9.
Include the next digit (7) from the dividend after 9, then repeat: 97 / 12

On to step 5:
97 divided by 12 is 8 with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 4828.0
Subtract 96 from 97 to get 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 12

Let's proceed to step 6:
12 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 48280.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
When dividing 100 by 12, we get 8 with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 48280.8
Subtract 96 from 100 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.

Moving on to step 8:
The number 12 fits into 40 3 times, leaving a remainder of 4.
The next digit of our result is 3. 
Result so far: 48280.83
If we take 36 away from 40, we end up 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.

On to step 9:
12 goes into 40 3 times with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 48280.833
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.

The final outcome is 48280.833, with a leftover of 0.0004.