We're dividing 10400751 by 778 
We want to figure out the number of times 10400751 can be divided by 778.

Going ahead to step 1:
778 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 778

Advancing to step 2:
778 can be fit into 10 0 times, resulting in a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 10 and we're left with 10.
Bring next digit (4) of the dividend behind the 10 and repeat the process: 104 / 778

Let's proceed to step 3:
104 divided by 778 is 0 with a remainder of 104.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 104 after subtracting 0 from 104.
Fetch the next digit (0) from the dividend, attach it to 104 and continue: 1040 / 778

On to step 4:
1040 divided by 778 is 1 with a remainder of 262.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 778 from 1040, we get 262.
Grab the next digit (0) from the dividend, add it to 262, then carry on: 2620 / 778

Moving on to step 5:
If we divide 2620 by 778, we get 3 and a remainder of 286.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtracting 2334 from 2620 leaves us with 286.
Append the next digit (7) from the dividend to 286 and continue with: 2867 / 778

On to step 6:
When dividing 2867 by 778, we get 3 with a remainder of 533.
The next digit of our result is 3. 
Result so far: 133.0
Subtract 2334 from 2867 to get 533.
Fetch the next digit (5) from the dividend, attach it to 533 and continue: 5335 / 778

Advancing to step 7:
When dividing 5335 by 778, we get 6 with a remainder of 667.
Put 6 as the next digit of the answer. 
Result so far: 1336.0
Subtracting 4668 from 5335 leaves us with 667.
Fetch the next digit (1) from the dividend, attach it to 667 and continue: 6671 / 778

Going ahead to step 8:
The number 778 fits into 6671 8 times, leaving a remainder of 447.
Put 8 as the next digit of the answer. 
Result so far: 13368.0
If we take 6224 away from 6671, we end up with 447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

Moving on to step 9:
When dividing 4470 by 778, we get 5 with a remainder of 580.
Use 5 as the next digit of our solution. 
Result so far: 13368.5
Subtracting 3890 from 4470 leaves us with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Going ahead to step 10:
When dividing 5800 by 778, we get 7 with a remainder of 354.
Put 7 as the next digit of the answer. 
Result so far: 13368.57
Subtract 5446 from 5800 to get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Moving on to step 11:
3540 divided by 778 is 4 with a remainder of 428.
The next digit of our result is 4. 
Result so far: 13368.574
Deduct 3112 from 3540 and we're left with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Advancing to step 12:
4280 divided by 778 is 5 with a remainder of 390.
The next digit of our result is 5. 
Result so far: 13368.5745
Deduct 3890 from 4280 and we're left with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Moving on to step 13:
778 goes into 3900 5 times with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 13368.57455
If we subtract 3890 from 3900, 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.

The final result is 13368.57455 with a remainder of 1e-05.