We look at the division of 324726 by 78 
The aim is to understand the frequency of 78 in 324726.

Going ahead to step 1:
78 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 78

On to step 2:
78 can be fit into 32 0 times, resulting in a remainder of 32.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 32 and we're left with 32.
Grab the next digit (4) from the dividend, add it to 32, then carry on: 324 / 78

On to step 3:
If we divide 324 by 78, we get 4 and a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 312 from 324 and we're left with 12.
Grab the next digit (7) from the dividend, add it to 12, then carry on: 127 / 78

Going ahead to step 4:
78 goes into 127 1 times with a remainder of 49.
Use 1 as the next digit of our solution. 
Result so far: 41.0
Subtract 78 from 127 to get 49.
Fetch the next digit (2) from the dividend, attach it to 49 and continue: 492 / 78

Going ahead to step 5:
78 can be fit into 492 6 times, resulting in a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 416.0
If we take 468 away from 492, we end up with 24.
Bring next digit (6) of the dividend behind the 24 and repeat the process: 246 / 78

Let's proceed to step 6:
78 goes into 246 3 times with a remainder of 12.
The next digit of our result is 3. 
Result so far: 4163.0
The remainder is 12 after subtracting 234 from 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
When dividing 120 by 78, we get 1 with a remainder of 42.
Record the quotient 1 as the next digit in the result. 
Result so far: 4163.1
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.

Going ahead to step 8:
If we divide 420 by 78, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 4163.15
Subtracting 390 from 420 leaves us 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 9:
300 divided by 78 is 3 with a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 4163.153
Deduct 234 from 300 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 10:
If we divide 660 by 78, we get 8 and a remainder of 36.
The next digit of our result is 8. 
Result so far: 4163.1538
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.

Step 11:
360 divided by 78 is 4 with a remainder of 48.
The next digit of our result is 4. 
Result so far: 4163.15384
Deduct 312 from 360 and we're left with 48.
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 12:
78 goes into 480 6 times with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 4163.153846
Deduct 468 from 480 and we're left 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.

On to step 13:
120 divided by 78 is 1 with a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 4163.1538461
Subtracting 78 from 120 leaves us 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.

Advancing to step 14:
If we divide 420 by 78, we get 5 and a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 4163.15384615
The remainder is 30 after subtracting 390 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

After the division, we end up with 4163.15384615 and a remainder of 3e-08.