375942 ÷ 12 
The aim is to understand the frequency of 12 in 375942.

Going ahead to step 1:
The number 12 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 12

Moving on to step 2:
When dividing 37 by 12, we get 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 36 from 37, we get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 12

Moving on to step 3:
If we divide 15 by 12, we get 1 and a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
Subtracting 12 from 15 leaves us with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 12

Moving on to step 4:
The number 12 fits into 39 3 times, leaving a remainder of 3.
The next digit of our result is 3. 
Result so far: 313.0
If we take 36 away from 39, we end up with 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 12

Moving on to step 5:
34 divided by 12 is 2 with a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 3132.0
If we subtract 24 from 34, we get 10.
Take the next digit (2) from the dividend and append it to 10, then repeat: 102 / 12

On to step 6:
If we divide 102 by 12, we get 8 and a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 31328.0
If we take 96 away from 102, we end up 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.

Moving on to step 7:
If we divide 60 by 12, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 31328.5
Subtracting 60 from 60 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
When dividing 0 by 12, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 31328.5
The remainder is 0 after subtracting 0 from 0.
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 9:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 31328.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 31328.5 with a remaining 0.0.