We're dividing 778558 by 78 
We want to figure out the number of times 778558 can be divided by 78.

Going ahead to step 1:
When dividing 7 by 78, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 78

Step 2:
The number 78 fits into 77 0 times, leaving a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 77, we end up with 77.
Grab the next digit (8) from the dividend, add it to 77, then carry on: 778 / 78

Step 3:
778 divided by 78 is 9 with a remainder of 76.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 702 from 778 to get 76.
Append the next digit (5) from the dividend to 76 and continue with: 765 / 78

Step 4:
78 can be fit into 765 9 times, resulting in a remainder of 63.
The number 9 becomes the next digit in our result. 
Result so far: 99.0
Subtract 702 from 765 to get 63.
Take the next digit (5) from the dividend and append it to 63, then repeat: 635 / 78

Going ahead to step 5:
78 can be fit into 635 8 times, resulting in a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 998.0
Deduct 624 from 635 and we're left with 11.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 78

On to step 6:
When dividing 118 by 78, we get 1 with a remainder of 40.
Write down 1 as next digit of the result. 
Result so far: 9981.0
The remainder is 40 after subtracting 78 from 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 7:
If we divide 400 by 78, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 9981.5
If we subtract 390 from 400, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
When dividing 100 by 78, we get 1 with a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 9981.51
Deduct 78 from 100 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 9:
If we divide 220 by 78, we get 2 and a remainder of 64.
The number 2 becomes the next digit in our result. 
Result so far: 9981.512
Subtracting 156 from 220 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 10:
The number 78 fits into 640 8 times, leaving a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 9981.5128
Subtract 624 from 640 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 11:
The number 78 fits into 160 2 times, leaving a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 9981.51282
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 12:
40 divided by 78 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 9981.51282
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 13:
400 divided by 78 is 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 9981.5128205
Subtracting 390 from 400 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 14:
100 divided by 78 is 1 with a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 9981.51282051
Subtract 78 from 100 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final result is 9981.51282051 with a remainder of 2.2e-08.