We're dividing 371923 by 12 
The aim is to understand the frequency of 12 in 371923.

Going ahead to step 1:
If we divide 3 by 12, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 12

Let's proceed to step 2:
The number 12 fits into 37 3 times, leaving a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 36 from 37 and we're left with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 12

Moving on to step 3:
When dividing 11 by 12, we get 0 with a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Subtracting 0 from 11 leaves us with 11.
Append the next digit (9) from the dividend to 11 and continue with: 119 / 12

Moving on to step 4:
119 divided by 12 is 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 309.0
Subtracting 108 from 119 leaves us with 11.
Append the next digit (2) from the dividend to 11 and continue with: 112 / 12

Advancing to step 5:
112 divided by 12 is 9 with a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 3099.0
Deduct 108 from 112 and we're left with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 12

Going ahead to step 6:
When dividing 43 by 12, we get 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 30993.0
If we subtract 36 from 43, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
12 can be fit into 70 5 times, resulting in a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 30993.5
If we subtract 60 from 70, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
When dividing 100 by 12, we get 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 30993.58
Deduct 96 from 100 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 30993.583
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 10:
12 can be fit into 40 3 times, resulting in a remainder of 4.
The next digit of our result is 3. 
Result so far: 30993.5833
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.

In conclusion, the division gives 30993.5833 with a balance of 4e-05.