623548 ÷ 12 
The aim is to understand the frequency of 12 in 623548.

Step 1:
The number 12 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 12

Moving on to step 2:
12 can be fit into 62 5 times, resulting in a remainder of 2.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we take 60 away from 62, we end up with 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 12

On to step 3:
When dividing 23 by 12, we get 1 with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 51.0
Deduct 12 from 23 and we're left with 11.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 12

Let's proceed to step 4:
If we divide 115 by 12, we get 9 and a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 519.0
If we take 108 away from 115, we end up with 7.
Include the next digit (4) from the dividend after 7, then repeat: 74 / 12

Advancing to step 5:
74 divided by 12 is 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 5196.0
Deduct 72 from 74 and we're left with 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 12

Let's proceed to step 6:
28 divided by 12 is 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 51962.0
The remainder is 4 after subtracting 24 from 28.
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 7:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 51962.3
The remainder is 4 after subtracting 36 from 40.
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:
12 goes into 40 3 times with a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 51962.33
If we subtract 36 from 40, 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.

The quotient of the division is 51962.33, and the remainder is 0.004.