We look at the division of 42407380 by 778 
Let's see how many times 778 fits into 42407380.

Step 1:
The number 778 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 778

Let's proceed to step 2:
778 can be fit into 42 0 times, resulting in a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Fetch the next digit (4) from the dividend, attach it to 42 and continue: 424 / 778

Going ahead to step 3:
778 can be fit into 424 0 times, resulting in a remainder of 424.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 424 and we're left with 424.
Fetch the next digit (0) from the dividend, attach it to 424 and continue: 4240 / 778

Moving on to step 4:
When dividing 4240 by 778, we get 5 with a remainder of 350.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 3890 from 4240, we get 350.
Fetch the next digit (7) from the dividend, attach it to 350 and continue: 3507 / 778

Let's proceed to step 5:
When dividing 3507 by 778, we get 4 with a remainder of 395.
Write down 4 as next digit of the result. 
Result so far: 54.0
The remainder is 395 after subtracting 3112 from 3507.
Grab the next digit (3) from the dividend, add it to 395, then carry on: 3953 / 778

Moving on to step 6:
The number 778 fits into 3953 5 times, leaving a remainder of 63.
Put 5 as the next digit of the answer. 
Result so far: 545.0
Subtracting 3890 from 3953 leaves us with 63.
Grab the next digit (8) from the dividend, add it to 63, then carry on: 638 / 778

Advancing to step 7:
When dividing 638 by 778, we get 0 with a remainder of 638.
Write down 0 as next digit of the result. 
Result so far: 5450.0
Subtract 0 from 638 to get 638.
Include the next digit (0) from the dividend after 638, then repeat: 6380 / 778

Going ahead to step 8:
778 can be fit into 6380 8 times, resulting in a remainder of 156.
Record the quotient 8 as the next digit in the result. 
Result so far: 54508.0
Subtracting 6224 from 6380 leaves us with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Going ahead to step 9:
The number 778 fits into 1560 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 54508.2
If we take 1556 away from 1560, we end up 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.

On to step 10:
When dividing 40 by 778, we get 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 54508.2
If we take 0 away from 40, we end up 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.

Let's proceed to step 11:
778 goes into 400 0 times with a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 54508.2
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final outcome is 54508.2, with a leftover of 0.04.