We look at the division of 81013403 by 239 
The aim is to understand the frequency of 239 in 81013403.

Moving on to step 1:
239 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 239

Going ahead to step 2:
If we divide 81 by 239, we get 0 and a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Take the next digit (0) from the dividend and append it to 81, then repeat: 810 / 239

On to step 3:
When dividing 810 by 239, we get 3 with a remainder of 93.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 717 away from 810, we end up with 93.
Grab the next digit (1) from the dividend, add it to 93, then carry on: 931 / 239

Advancing to step 4:
931 divided by 239 is 3 with a remainder of 214.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
The remainder is 214 after subtracting 717 from 931.
Grab the next digit (3) from the dividend, add it to 214, then carry on: 2143 / 239

Step 5:
239 can be fit into 2143 8 times, resulting in a remainder of 231.
Record the quotient 8 as the next digit in the result. 
Result so far: 338.0
If we subtract 1912 from 2143, we get 231.
Append the next digit (4) from the dividend to 231 and continue with: 2314 / 239

Advancing to step 6:
If we divide 2314 by 239, we get 9 and a remainder of 163.
Use 9 as the next digit of our solution. 
Result so far: 3389.0
Subtracting 2151 from 2314 leaves us with 163.
Take the next digit (0) from the dividend and append it to 163, then repeat: 1630 / 239

On to step 7:
239 goes into 1630 6 times with a remainder of 196.
The number 6 becomes the next digit in our result. 
Result so far: 33896.0
Deduct 1434 from 1630 and we're left with 196.
Include the next digit (3) from the dividend after 196, then repeat: 1963 / 239

Going ahead to step 8:
When dividing 1963 by 239, we get 8 with a remainder of 51.
Use 8 as the next digit of our solution. 
Result so far: 338968.0
If we subtract 1912 from 1963, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 9:
239 goes into 510 2 times with a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 338968.2
If we take 478 away from 510, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 10:
When dividing 320 by 239, we get 1 with a remainder of 81.
The number 1 becomes the next digit in our result. 
Result so far: 338968.21
Deduct 239 from 320 and we're left with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 11:
810 divided by 239 is 3 with a remainder of 93.
Write down 3 as next digit of the result. 
Result so far: 338968.213
Subtract 717 from 810 to get 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Moving on to step 12:
The number 239 fits into 930 3 times, leaving a remainder of 213.
The next digit of our result is 3. 
Result so far: 338968.2133
Subtracting 717 from 930 leaves us with 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

The quotient of the division is 338968.2133, and the remainder is 0.00213.