781474 divided by 78 
The aim is to understand the frequency of 78 in 781474.

Let's proceed to step 1:
The number 78 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 78

Advancing to step 2:
78 divided by 78 is 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 0 after subtracting 78 from 78.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 78

Let's proceed to step 3:
1 divided by 78 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 78

Going ahead to step 4:
14 divided by 78 is 0 with a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 100.0
Deduct 0 from 14 and we're left with 14.
Grab the next digit (7) from the dividend, add it to 14, then carry on: 147 / 78

Advancing to step 5:
78 can be fit into 147 1 times, resulting in a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 1001.0
The remainder is 69 after subtracting 78 from 147.
Grab the next digit (4) from the dividend, add it to 69, then carry on: 694 / 78

On to step 6:
694 divided by 78 is 8 with a remainder of 70.
Use 8 as the next digit of our solution. 
Result so far: 10018.0
If we take 624 away from 694, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 7:
When dividing 700 by 78, we get 8 with a remainder of 76.
The next digit of our result is 8. 
Result so far: 10018.8
If we subtract 624 from 700, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 8:
The number 78 fits into 760 9 times, leaving a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 10018.89
If we take 702 away from 760, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 9:
78 can be fit into 580 7 times, resulting in a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 10018.897
If we subtract 546 from 580, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 10:
78 goes into 340 4 times with a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 10018.8974
Deduct 312 from 340 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 11:
78 can be fit into 280 3 times, resulting in a remainder of 46.
Record the quotient 3 as the next digit in the result. 
Result so far: 10018.89743
If we subtract 234 from 280, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 12:
460 divided by 78 is 5 with a remainder of 70.
Write down 5 as next digit of the result. 
Result so far: 10018.897435
If we take 390 away from 460, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 13:
700 divided by 78 is 8 with a remainder of 76.
The next digit of our result is 8. 
Result so far: 10018.8974358
If we subtract 624 from 700, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 14:
760 divided by 78 is 9 with a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 10018.89743589
Subtracting 702 from 760 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final outcome is 10018.89743589, with a leftover of 5.8e-08.