We're dividing 723894 by 78 
The aim is to understand the frequency of 78 in 723894.

Step 1:
78 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 78

Going ahead to step 2:
78 goes into 72 0 times with a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Grab the next digit (3) from the dividend, add it to 72, then carry on: 723 / 78

Advancing to step 3:
78 goes into 723 9 times with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 702 from 723 and we're left with 21.
Append the next digit (8) from the dividend to 21 and continue with: 218 / 78

Going ahead to step 4:
If we divide 218 by 78, we get 2 and a remainder of 62.
Use 2 as the next digit of our solution. 
Result so far: 92.0
Subtract 156 from 218 to get 62.
Take the next digit (9) from the dividend and append it to 62, then repeat: 629 / 78

Step 5:
78 goes into 629 8 times with a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 928.0
If we take 624 away from 629, we end up with 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 78

On to step 6:
When dividing 54 by 78, we get 0 with a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 9280.0
Deduct 0 from 54 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 7:
When dividing 540 by 78, we get 6 with a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 9280.6
If we subtract 468 from 540, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 8:
When dividing 720 by 78, we get 9 with a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 9280.69
The remainder is 18 after subtracting 702 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 9:
78 can be fit into 180 2 times, resulting in a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 9280.692
The remainder is 24 after subtracting 156 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 10:
240 divided by 78 is 3 with a remainder of 6.
The next digit of our result is 3. 
Result so far: 9280.6923
If we take 234 away from 240, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 11:
60 divided by 78 is 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 9280.6923
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 12:
78 can be fit into 600 7 times, resulting in a remainder of 54.
Record the quotient 7 as the next digit in the result. 
Result so far: 9280.692307
If we subtract 546 from 600, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 13:
The number 78 fits into 540 6 times, leaving a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 9280.6923076
Deduct 468 from 540 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 14:
The number 78 fits into 720 9 times, leaving a remainder of 18.
The next digit of our result is 9. 
Result so far: 9280.69230769
If we take 702 away from 720, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 9280.69230769 and a remainder of 1.8e-08.