We look at the division of 738210 by 78 
The aim is to understand the frequency of 78 in 738210.

Advancing to step 1:
7 divided by 78 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 78

Let's proceed to step 2:
73 divided by 78 is 0 with a remainder of 73.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 73 after subtracting 0 from 73.
Include the next digit (8) from the dividend after 73, then repeat: 738 / 78

On to step 3:
738 divided by 78 is 9 with a remainder of 36.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
The remainder is 36 after subtracting 702 from 738.
Append the next digit (2) from the dividend to 36 and continue with: 362 / 78

Step 4:
The number 78 fits into 362 4 times, leaving a remainder of 50.
The number 4 becomes the next digit in our result. 
Result so far: 94.0
Deduct 312 from 362 and we're left with 50.
Fetch the next digit (1) from the dividend, attach it to 50 and continue: 501 / 78

Step 5:
The number 78 fits into 501 6 times, leaving a remainder of 33.
Put 6 as the next digit of the answer. 
Result so far: 946.0
The remainder is 33 after subtracting 468 from 501.
Fetch the next digit (0) from the dividend, attach it to 33 and continue: 330 / 78

Moving on to step 6:
The number 78 fits into 330 4 times, leaving a remainder of 18.
The next digit of our result is 4. 
Result so far: 9464.0
Subtract 312 from 330 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 7:
The number 78 fits into 180 2 times, leaving a remainder of 24.
The next digit of our result is 2. 
Result so far: 9464.2
If we take 156 away from 180, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 8:
When dividing 240 by 78, we get 3 with a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 9464.23
Subtracting 234 from 240 leaves us 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.

Step 9:
When dividing 60 by 78, we get 0 with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 9464.23
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 10:
78 can be fit into 600 7 times, resulting in a remainder of 54.
Use 7 as the next digit of our solution. 
Result so far: 9464.2307
The remainder is 54 after subtracting 546 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 11:
If we divide 540 by 78, we get 6 and a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 9464.23076
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 12:
78 can be fit into 720 9 times, resulting in a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 9464.230769
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.

Advancing to step 13:
78 goes into 180 2 times with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 9464.2307692
Subtract 156 from 180 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 14:
78 goes into 240 3 times with a remainder of 6.
The next digit of our result is 3. 
Result so far: 9464.23076923
If we subtract 234 from 240, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

In conclusion, the division gives 9464.23076923 with a balance of 6e-09.