Let's divide 315424 by 78
The aim is to understand the frequency of 78 in 315424.

Step 1:
When dividing 3 by 78, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 78

Step 2:
31 divided by 78 is 0 with a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Take the next digit (5) from the dividend and append it to 31, then repeat: 315 / 78

Step 3:
78 can be fit into 315 4 times, resulting in a remainder of 3.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 312 from 315 to get 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 78

Step 4:
78 can be fit into 34 0 times, resulting in a remainder of 34.
Write down 0 as next digit of the result. 
Result so far: 40.0
If we subtract 0 from 34, we get 34.
Bring next digit (2) of the dividend behind the 34 and repeat the process: 342 / 78

Step 5:
78 can be fit into 342 4 times, resulting in a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 404.0
Deduct 312 from 342 and we're left with 30.
Append the next digit (4) from the dividend to 30 and continue with: 304 / 78

Let's proceed to step 6:
If we divide 304 by 78, we get 3 and a remainder of 70.
The number 3 becomes the next digit in our result. 
Result so far: 4043.0
Subtracting 234 from 304 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 7:
78 can be fit into 700 8 times, resulting in a remainder of 76.
Put 8 as the next digit of the answer. 
Result so far: 4043.8
Deduct 624 from 700 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 8:
760 divided by 78 is 9 with a remainder of 58.
The next digit of our result is 9. 
Result so far: 4043.89
Subtract 702 from 760 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 9:
580 divided by 78 is 7 with a remainder of 34.
Use 7 as the next digit of our solution. 
Result so far: 4043.897
Subtracting 546 from 580 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 10:
340 divided by 78 is 4 with a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 4043.8974
If we subtract 312 from 340, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 11:
If we divide 280 by 78, we get 3 and a remainder of 46.
Record the quotient 3 as the next digit in the result. 
Result so far: 4043.89743
The remainder is 46 after subtracting 234 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 12:
78 can be fit into 460 5 times, resulting in a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 4043.897435
Subtracting 390 from 460 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 13:
If we divide 700 by 78, we get 8 and a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 4043.8974358
Deduct 624 from 700 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 14:
When dividing 760 by 78, we get 9 with a remainder of 58.
Use 9 as the next digit of our solution. 
Result so far: 4043.89743589
If we subtract 702 from 760, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 4043.89743589 with a remainder of 5.8e-08.