778841 divided by 51 
We want to figure out the number of times 778841 can be divided by 51.

Going ahead to step 1:
51 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 51

Advancing to step 2:
77 divided by 51 is 1 with a remainder of 26.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 51 from 77, we get 26.
Bring next digit (8) of the dividend behind the 26 and repeat the process: 268 / 51

Moving on to step 3:
51 goes into 268 5 times with a remainder of 13.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Deduct 255 from 268 and we're left with 13.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 51

Let's proceed to step 4:
The number 51 fits into 138 2 times, leaving a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 152.0
If we take 102 away from 138, we end up with 36.
Fetch the next digit (4) from the dividend, attach it to 36 and continue: 364 / 51

Moving on to step 5:
If we divide 364 by 51, we get 7 and a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 1527.0
If we take 357 away from 364, we end up with 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 51

Step 6:
71 divided by 51 is 1 with a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 15271.0
The remainder is 20 after subtracting 51 from 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 7:
51 goes into 200 3 times with a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 15271.3
The remainder is 47 after subtracting 153 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 8:
51 can be fit into 470 9 times, resulting in a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 15271.39
Subtract 459 from 470 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 9:
The number 51 fits into 110 2 times, leaving a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 15271.392
Subtracting 102 from 110 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
51 can be fit into 80 1 times, resulting in a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 15271.3921
Subtracting 51 from 80 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 11:
The number 51 fits into 290 5 times, leaving a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 15271.39215
Deduct 255 from 290 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 12:
51 goes into 350 6 times with a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 15271.392156
Subtract 306 from 350 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 13:
440 divided by 51 is 8 with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 15271.3921568
Deduct 408 from 440 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 14:
320 divided by 51 is 6 with a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 15271.39215686
Subtracting 306 from 320 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.

After the division, we end up with 15271.39215686 and a remainder of 1.4e-08.