We divide 939398 by 78
The aim is to understand the frequency of 78 in 939398.

Advancing to step 1:
If we divide 9 by 78, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (3) of the dividend behind the 9 and repeat the process: 93 / 78

On to step 2:
When dividing 93 by 78, we get 1 with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 78 from 93, we get 15.
Bring next digit (9) of the dividend behind the 15 and repeat the process: 159 / 78

Moving on to step 3:
78 can be fit into 159 2 times, resulting in a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we subtract 156 from 159, we get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 78

Let's proceed to step 4:
If we divide 33 by 78, we get 0 and a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 120.0
Subtract 0 from 33 to get 33.
Include the next digit (9) from the dividend after 33, then repeat: 339 / 78

Let's proceed to step 5:
78 can be fit into 339 4 times, resulting in a remainder of 27.
Record the quotient 4 as the next digit in the result. 
Result so far: 1204.0
If we take 312 away from 339, we end up with 27.
Include the next digit (8) from the dividend after 27, then repeat: 278 / 78

Let's proceed to step 6:
The number 78 fits into 278 3 times, leaving a remainder of 44.
Record the quotient 3 as the next digit in the result. 
Result so far: 12043.0
The remainder is 44 after subtracting 234 from 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 7:
The number 78 fits into 440 5 times, leaving a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 12043.5
If we subtract 390 from 440, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 8:
78 can be fit into 500 6 times, resulting in a remainder of 32.
The next digit of our result is 6. 
Result so far: 12043.56
The remainder is 32 after subtracting 468 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 9:
78 goes into 320 4 times with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 12043.564
If we take 312 away from 320, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
78 goes into 80 1 times with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 12043.5641
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 11:
When dividing 20 by 78, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 12043.5641
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 12:
When dividing 200 by 78, we get 2 with a remainder of 44.
The next digit of our result is 2. 
Result so far: 12043.564102
If we subtract 156 from 200, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 13:
440 divided by 78 is 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 12043.5641025
Subtract 390 from 440 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 14:
When dividing 500 by 78, we get 6 with a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 12043.56410256
If we subtract 468 from 500, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Our division results in 12043.56410256 with a remaining 3.2e-08.