623726 ÷ 12 
The aim is to understand the frequency of 12 in 623726.

On to step 1:
The number 12 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 12

On to step 2:
The number 12 fits into 62 5 times, leaving a remainder of 2.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 2 after subtracting 60 from 62.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 12

Moving on to step 3:
23 divided by 12 is 1 with a remainder of 11.
The next digit of our result is 1. 
Result so far: 51.0
The remainder is 11 after subtracting 12 from 23.
Bring next digit (7) of the dividend behind the 11 and repeat the process: 117 / 12

Advancing to step 4:
12 can be fit into 117 9 times, resulting in a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 519.0
Subtract 108 from 117 to get 9.
Grab the next digit (2) from the dividend, add it to 9, then carry on: 92 / 12

Let's proceed to step 5:
12 can be fit into 92 7 times, resulting in a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 5197.0
Subtract 84 from 92 to get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 12

Going ahead to step 6:
If we divide 86 by 12, we get 7 and a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 51977.0
If we take 84 away from 86, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
12 can be fit into 20 1 times, resulting in a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 51977.1
Subtracting 12 from 20 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
80 divided by 12 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 51977.16
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 51977.166
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 51977.166 with a remainder of 0.0008.