235541 ÷ 12 
The aim is to understand the frequency of 12 in 235541.

Step 1:
If we divide 2 by 12, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 12

On to step 2:
When dividing 23 by 12, we get 1 with a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 12 away from 23, we end up with 11.
Grab the next digit (5) from the dividend, add it to 11, then carry on: 115 / 12

On to step 3:
12 can be fit into 115 9 times, resulting in a remainder of 7.
The next digit of our result is 9. 
Result so far: 19.0
Subtracting 108 from 115 leaves us with 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 12

Advancing to step 4:
The number 12 fits into 75 6 times, leaving a remainder of 3.
Write down 6 as next digit of the result. 
Result so far: 196.0
Subtracting 72 from 75 leaves us with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 12

On to step 5:
The number 12 fits into 34 2 times, leaving a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 1962.0
Subtract 24 from 34 to get 10.
Include the next digit (1) from the dividend after 10, then repeat: 101 / 12

Step 6:
The number 12 fits into 101 8 times, leaving a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 19628.0
Deduct 96 from 101 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
If we divide 50 by 12, we get 4 and a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 19628.4
If we take 48 away from 50, 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 8:
12 goes into 20 1 times with a remainder of 8.
The next digit of our result is 1. 
Result so far: 19628.41
Subtract 12 from 20 to get 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 9:
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: 19628.416
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.

Step 10:
If we divide 80 by 12, we get 6 and a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 19628.4166
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 19628.4166 with a remainder of 8e-05.