488629 ÷ 12 
The aim is to understand the frequency of 12 in 488629.

On to step 1:
12 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 12

On to step 2:
The number 12 fits into 48 4 times, leaving a remainder of 0.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 0 after subtracting 48 from 48.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 12

Let's proceed to step 3:
12 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 40.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 12

Going ahead to step 4:
When dividing 86 by 12, we get 7 with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 407.0
Subtracting 84 from 86 leaves us with 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 12

Advancing to step 5:
When dividing 22 by 12, we get 1 with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 4071.0
If we subtract 12 from 22, we get 10.
Bring next digit (9) of the dividend behind the 10 and repeat the process: 109 / 12

Advancing to step 6:
If we divide 109 by 12, we get 9 and a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 40719.0
Deduct 108 from 109 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
10 divided by 12 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 40719.0
The remainder is 10 after subtracting 0 from 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:
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: 40719.08
The remainder is 4 after subtracting 96 from 100.
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:
When dividing 40 by 12, we get 3 with a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 40719.083
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.

Moving on to step 10:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 40719.0833
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 result is 40719.0833 with a remainder of 4e-05.