We look at the division of 345030 by 78 
The aim is to understand the frequency of 78 in 345030.

Advancing to step 1:
78 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 78

Step 2:
The number 78 fits into 34 0 times, leaving a remainder of 34.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 34 leaves us with 34.
Take the next digit (5) from the dividend and append it to 34, then repeat: 345 / 78

Advancing to step 3:
345 divided by 78 is 4 with a remainder of 33.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 312 from 345 and we're left with 33.
Grab the next digit (0) from the dividend, add it to 33, then carry on: 330 / 78

Moving on to step 4:
78 goes into 330 4 times with a remainder of 18.
Put 4 as the next digit of the answer. 
Result so far: 44.0
If we take 312 away from 330, we end up with 18.
Bring next digit (3) of the dividend behind the 18 and repeat the process: 183 / 78

Moving on to step 5:
The number 78 fits into 183 2 times, leaving a remainder of 27.
Write down 2 as next digit of the result. 
Result so far: 442.0
Subtracting 156 from 183 leaves us with 27.
Bring next digit (0) of the dividend behind the 27 and repeat the process: 270 / 78

Going ahead to step 6:
The number 78 fits into 270 3 times, leaving a remainder of 36.
Use 3 as the next digit of our solution. 
Result so far: 4423.0
Subtracting 234 from 270 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 7:
78 can be fit into 360 4 times, resulting in a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 4423.4
The remainder is 48 after subtracting 312 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 8:
The number 78 fits into 480 6 times, leaving a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 4423.46
If we subtract 468 from 480, we get 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 9:
When dividing 120 by 78, we get 1 with a remainder of 42.
The next digit of our result is 1. 
Result so far: 4423.461
The remainder is 42 after subtracting 78 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 10:
If we divide 420 by 78, we get 5 and a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 4423.4615
If we take 390 away from 420, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 11:
300 divided by 78 is 3 with a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 4423.46153
If we subtract 234 from 300, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 12:
660 divided by 78 is 8 with a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 4423.461538
Subtract 624 from 660 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 13:
The number 78 fits into 360 4 times, leaving a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 4423.4615384
The remainder is 48 after subtracting 312 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 14:
When dividing 480 by 78, we get 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 4423.46153846
If we take 468 away from 480, we end up 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.

The final result is 4423.46153846 with a remainder of 1.2e-08.