We look at the division of 12388371 by 833 
The aim is to understand the frequency of 833 in 12388371.

On to step 1:
1 divided by 833 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 833

On to step 2:
833 goes into 12 0 times with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 833

On to step 3:
123 divided by 833 is 0 with a remainder of 123.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 123 to get 123.
Fetch the next digit (8) from the dividend, attach it to 123 and continue: 1238 / 833

Moving on to step 4:
The number 833 fits into 1238 1 times, leaving a remainder of 405.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 833 from 1238 and we're left with 405.
Include the next digit (8) from the dividend after 405, then repeat: 4058 / 833

On to step 5:
The number 833 fits into 4058 4 times, leaving a remainder of 726.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
The remainder is 726 after subtracting 3332 from 4058.
Append the next digit (3) from the dividend to 726 and continue with: 7263 / 833

Let's proceed to step 6:
When dividing 7263 by 833, we get 8 with a remainder of 599.
Record the quotient 8 as the next digit in the result. 
Result so far: 148.0
If we subtract 6664 from 7263, we get 599.
Bring next digit (7) of the dividend behind the 599 and repeat the process: 5997 / 833

On to step 7:
5997 divided by 833 is 7 with a remainder of 166.
Put 7 as the next digit of the answer. 
Result so far: 1487.0
The remainder is 166 after subtracting 5831 from 5997.
Include the next digit (1) from the dividend after 166, then repeat: 1661 / 833

Let's proceed to step 8:
When dividing 1661 by 833, we get 1 with a remainder of 828.
Use 1 as the next digit of our solution. 
Result so far: 14871.0
If we take 833 away from 1661, we end up with 828.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8280, and continue the process.

On to step 9:
The number 833 fits into 8280 9 times, leaving a remainder of 783.
The number 9 becomes the next digit in our result. 
Result so far: 14871.9
Deduct 7497 from 8280 and we're left with 783.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7830, and continue the process.

On to step 10:
7830 divided by 833 is 9 with a remainder of 333.
The number 9 becomes the next digit in our result. 
Result so far: 14871.99
Subtracting 7497 from 7830 leaves us with 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

In conclusion, the division gives 14871.99 with a balance of 0.333.