We look at the division of 3501 by 12 
The aim is to understand the frequency of 12 in 3501.

Moving on to step 1:
12 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 12

Moving on to step 2:
35 divided by 12 is 2 with a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 24 from 35 to get 11.
Include the next digit (0) from the dividend after 11, then repeat: 110 / 12

Moving on to step 3:
When dividing 110 by 12, we get 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
If we subtract 108 from 110, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 12

Moving on to step 4:
12 goes into 21 1 times with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 291.0
The remainder is 9 after subtracting 12 from 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 5:
12 can be fit into 90 7 times, resulting in a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 291.7
Deduct 84 from 90 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 6:
If we divide 60 by 12, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 291.75
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
If we divide 0 by 12, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 291.75
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
The number 12 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 291.75
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 291.75 with a remainder of 0.0.