We look at the division of 697332 by 78 
The aim is to understand the frequency of 78 in 697332.

Advancing to step 1:
The number 78 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 78

Moving on to step 2:
78 can be fit into 69 0 times, resulting in a remainder of 69.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 69, we get 69.
Bring next digit (7) of the dividend behind the 69 and repeat the process: 697 / 78

Let's proceed to step 3:
697 divided by 78 is 8 with a remainder of 73.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 624 away from 697, we end up with 73.
Append the next digit (3) from the dividend to 73 and continue with: 733 / 78

Moving on to step 4:
78 goes into 733 9 times with a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 89.0
Subtract 702 from 733 to get 31.
Take the next digit (3) from the dividend and append it to 31, then repeat: 313 / 78

On to step 5:
313 divided by 78 is 4 with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 894.0
Deduct 312 from 313 and we're left with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 78

Advancing to step 6:
12 divided by 78 is 0 with a remainder of 12.
The next digit of our result is 0. 
Result so far: 8940.0
Subtract 0 from 12 to 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 7:
The number 78 fits into 120 1 times, leaving a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 8940.1
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.

On to step 8:
78 goes into 420 5 times with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 8940.15
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.

Moving on to step 9:
78 can be fit into 300 3 times, resulting in a remainder of 66.
Put 3 as the next digit of the answer. 
Result so far: 8940.153
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.

Moving on to step 10:
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: 8940.1538
If we take 624 away from 660, we end up 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.

Going ahead to step 11:
360 divided by 78 is 4 with a remainder of 48.
Use 4 as the next digit of our solution. 
Result so far: 8940.15384
Subtracting 312 from 360 leaves us 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.

Advancing to step 12:
78 goes into 480 6 times with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 8940.153846
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.

Advancing to step 13:
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: 8940.1538461
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.

Moving on to step 14:
420 divided by 78 is 5 with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 8940.15384615
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 8940.15384615 and a remainder of 3e-08.