We look at the division of 717344 by 78 
The aim is to understand the frequency of 78 in 717344.

On to step 1:
The number 78 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 78

On to step 2:
78 goes into 71 0 times with a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Include the next digit (7) from the dividend after 71, then repeat: 717 / 78

Moving on to step 3:
78 can be fit into 717 9 times, resulting in a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 702 from 717 and we're left with 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 78

Step 4:
153 divided by 78 is 1 with a remainder of 75.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
If we subtract 78 from 153, we get 75.
Append the next digit (4) from the dividend to 75 and continue with: 754 / 78

Let's proceed to step 5:
78 goes into 754 9 times with a remainder of 52.
Put 9 as the next digit of the answer. 
Result so far: 919.0
Deduct 702 from 754 and we're left with 52.
Take the next digit (4) from the dividend and append it to 52, then repeat: 524 / 78

Let's proceed to step 6:
When dividing 524 by 78, we get 6 with a remainder of 56.
Put 6 as the next digit of the answer. 
Result so far: 9196.0
If we take 468 away from 524, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 7:
560 divided by 78 is 7 with a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 9196.7
Subtracting 546 from 560 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 8:
140 divided by 78 is 1 with a remainder of 62.
Use 1 as the next digit of our solution. 
Result so far: 9196.71
The remainder is 62 after subtracting 78 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 9:
620 divided by 78 is 7 with a remainder of 74.
Record the quotient 7 as the next digit in the result. 
Result so far: 9196.717
Deduct 546 from 620 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 10:
If we divide 740 by 78, we get 9 and a remainder of 38.
Use 9 as the next digit of our solution. 
Result so far: 9196.7179
If we subtract 702 from 740, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 11:
The number 78 fits into 380 4 times, leaving a remainder of 68.
The number 4 becomes the next digit in our result. 
Result so far: 9196.71794
Subtracting 312 from 380 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 12:
When dividing 680 by 78, we get 8 with a remainder of 56.
Put 8 as the next digit of the answer. 
Result so far: 9196.717948
Subtracting 624 from 680 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 13:
If we divide 560 by 78, we get 7 and a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 9196.7179487
Deduct 546 from 560 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 14:
140 divided by 78 is 1 with a remainder of 62.
Put 1 as the next digit of the answer. 
Result so far: 9196.71794871
Deduct 78 from 140 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The quotient of the division is 9196.71794871, and the remainder is 6.2e-08.