42778 ÷ 51 
We want to divide 42778 by 51.

Going ahead to step 1:
51 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
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 / 51

Moving on to step 2:
51 can be fit into 42 0 times, resulting in a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Include the next digit (7) from the dividend after 42, then repeat: 427 / 51

On to step 3:
If we divide 427 by 51, we get 8 and a remainder of 19.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we subtract 408 from 427, we get 19.
Fetch the next digit (7) from the dividend, attach it to 19 and continue: 197 / 51

Advancing to step 4:
If we divide 197 by 51, we get 3 and a remainder of 44.
Write down 3 as next digit of the result. 
Result so far: 83.0
Subtracting 153 from 197 leaves us with 44.
Include the next digit (8) from the dividend after 44, then repeat: 448 / 51

Step 5:
The number 51 fits into 448 8 times, leaving a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 838.0
If we take 408 away from 448, 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.

On to step 6:
If we divide 400 by 51, we get 7 and a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 838.7
Subtract 357 from 400 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 7:
The number 51 fits into 430 8 times, leaving a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 838.78
The remainder is 22 after subtracting 408 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 8:
The number 51 fits into 220 4 times, leaving a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 838.784
The remainder is 16 after subtracting 204 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
The number 51 fits into 160 3 times, leaving a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 838.7843
If we subtract 153 from 160, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 10:
70 divided by 51 is 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 838.78431
Subtracting 51 from 70 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 11:
The number 51 fits into 190 3 times, leaving a remainder of 37.
The next digit of our result is 3. 
Result so far: 838.784313
Subtracting 153 from 190 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 12:
370 divided by 51 is 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 838.7843137
Subtract 357 from 370 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 13:
The number 51 fits into 130 2 times, leaving a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 838.78431372
If we subtract 102 from 130, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

In conclusion, the division gives 838.78431372 with a balance of 2.8e-08.