We look at the division of 235881 by 78 
The aim is to understand the frequency of 78 in 235881.

Let's proceed to step 1:
2 divided by 78 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 78

Going ahead to step 2:
23 divided by 78 is 0 with a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 23 after subtracting 0 from 23.
Take the next digit (5) from the dividend and append it to 23, then repeat: 235 / 78

Going ahead to step 3:
78 goes into 235 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 1 after subtracting 234 from 235.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 78

Let's proceed to step 4:
When dividing 18 by 78, we get 0 with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 30.0
Deduct 0 from 18 and we're left with 18.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 78

On to step 5:
188 divided by 78 is 2 with a remainder of 32.
The next digit of our result is 2. 
Result so far: 302.0
Deduct 156 from 188 and we're left with 32.
Take the next digit (1) from the dividend and append it to 32, then repeat: 321 / 78

Moving on to step 6:
78 can be fit into 321 4 times, resulting in a remainder of 9.
The next digit of our result is 4. 
Result so far: 3024.0
Deduct 312 from 321 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
78 can be fit into 90 1 times, resulting in a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 3024.1
Subtracting 78 from 90 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 8:
78 can be fit into 120 1 times, resulting in a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 3024.11
Deduct 78 from 120 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final outcome is 3024.11, with a leftover of 0.042.