Let's divide 574021 by 12
The aim is to understand the frequency of 12 in 574021.

Let's proceed to step 1:
If we divide 5 by 12, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 12

Advancing to step 2:
57 divided by 12 is 4 with a remainder of 9.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 9 after subtracting 48 from 57.
Bring next digit (4) of the dividend behind the 9 and repeat the process: 94 / 12

Moving on to step 3:
94 divided by 12 is 7 with a remainder of 10.
The next digit of our result is 7. 
Result so far: 47.0
If we subtract 84 from 94, we get 10.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 12

On to step 4:
The number 12 fits into 100 8 times, leaving a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 478.0
Subtract 96 from 100 to get 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 12

Let's proceed to step 5:
The number 12 fits into 42 3 times, leaving a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 4783.0
Deduct 36 from 42 and we're left with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 12

Going ahead to step 6:
When dividing 61 by 12, we get 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 47835.0
Subtract 60 from 61 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
If we divide 10 by 12, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 47835.0
If we subtract 0 from 10, we get 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 8:
12 goes into 100 8 times with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 47835.08
If we subtract 96 from 100, we 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.

Step 9:
12 goes into 40 3 times with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 47835.083
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.

Let's proceed to step 10:
40 divided by 12 is 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 47835.0833
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 47835.0833 and a remainder of 4e-05.