772978 divided by 78 
The aim is to understand the frequency of 78 in 772978.

Advancing to step 1:
7 divided by 78 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 78

Advancing to step 2:
The number 78 fits into 77 0 times, leaving a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Grab the next digit (2) from the dividend, add it to 77, then carry on: 772 / 78

On to step 3:
78 can be fit into 772 9 times, resulting in a remainder of 70.
The next digit of our result is 9. 
Result so far: 9.0
Subtracting 702 from 772 leaves us with 70.
Append the next digit (9) from the dividend to 70 and continue with: 709 / 78

Going ahead to step 4:
If we divide 709 by 78, we get 9 and a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 99.0
Subtract 702 from 709 to get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 78

Going ahead to step 5:
78 goes into 77 0 times with a remainder of 77.
The next digit of our result is 0. 
Result so far: 990.0
The remainder is 77 after subtracting 0 from 77.
Append the next digit (8) from the dividend to 77 and continue with: 778 / 78

Advancing to step 6:
If we divide 778 by 78, we get 9 and a remainder of 76.
The number 9 becomes the next digit in our result. 
Result so far: 9909.0
Deduct 702 from 778 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 7:
If we divide 760 by 78, we get 9 and a remainder of 58.
Use 9 as the next digit of our solution. 
Result so far: 9909.9
If we subtract 702 from 760, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 8:
78 goes into 580 7 times with a remainder of 34.
Put 7 as the next digit of the answer. 
Result so far: 9909.97
The remainder is 34 after subtracting 546 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 9:
If we divide 340 by 78, we get 4 and a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 9909.974
Subtracting 312 from 340 leaves us 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.

On to step 10:
When dividing 280 by 78, we get 3 with a remainder of 46.
The number 3 becomes the next digit in our result. 
Result so far: 9909.9743
Subtract 234 from 280 to 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 11:
The number 78 fits into 460 5 times, leaving a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 9909.97435
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.

Going ahead to step 12:
If we divide 700 by 78, we get 8 and a remainder of 76.
Put 8 as the next digit of the answer. 
Result so far: 9909.974358
Deduct 624 from 700 and we're left with 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 13:
78 can be fit into 760 9 times, resulting in a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 9909.9743589
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.

Moving on to step 14:
The number 78 fits into 580 7 times, leaving a remainder of 34.
Put 7 as the next digit of the answer. 
Result so far: 9909.97435897
Deduct 546 from 580 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Our division results in 9909.97435897 with a remaining 3.4e-08.