We divide 511432 by 12
The aim is to understand the frequency of 12 in 511432.

On to step 1:
When dividing 5 by 12, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 12

Step 2:
The number 12 fits into 51 4 times, leaving a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 48 from 51 and we're left with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 12

Going ahead to step 3:
If we divide 31 by 12, we get 2 and a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
If we subtract 24 from 31, we get 7.
Include the next digit (4) from the dividend after 7, then repeat: 74 / 12

Going ahead to step 4:
74 divided by 12 is 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 426.0
Subtract 72 from 74 to get 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 12

Let's proceed to step 5:
When dividing 23 by 12, we get 1 with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 4261.0
If we take 12 away from 23, we end up with 11.
Fetch the next digit (2) from the dividend, attach it to 11 and continue: 112 / 12

Going ahead to step 6:
12 goes into 112 9 times with a remainder of 4.
The number 9 becomes the next digit in our result. 
Result so far: 42619.0
If we subtract 108 from 112, 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.

Let's proceed to step 7:
The number 12 fits into 40 3 times, leaving a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 42619.3
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.

Advancing to step 8:
40 divided by 12 is 3 with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 42619.33
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.

After the division, we end up with 42619.33 and a remainder of 0.004.