We're dividing 839020 by 78 
Let's see how many times 78 fits into 839020.

On to step 1:
78 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 78

Moving on to step 2:
If we divide 83 by 78, we get 1 and a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 78 away from 83, we end up with 5.
Grab the next digit (9) from the dividend, add it to 5, then carry on: 59 / 78

On to step 3:
The number 78 fits into 59 0 times, leaving a remainder of 59.
Put 0 as the next digit of the answer. 
Result so far: 10.0
The remainder is 59 after subtracting 0 from 59.
Append the next digit (0) from the dividend to 59 and continue with: 590 / 78

Moving on to step 4:
78 can be fit into 590 7 times, resulting in a remainder of 44.
The number 7 becomes the next digit in our result. 
Result so far: 107.0
Deduct 546 from 590 and we're left with 44.
Grab the next digit (2) from the dividend, add it to 44, then carry on: 442 / 78

Advancing to step 5:
442 divided by 78 is 5 with a remainder of 52.
Use 5 as the next digit of our solution. 
Result so far: 1075.0
If we subtract 390 from 442, we get 52.
Include the next digit (0) from the dividend after 52, then repeat: 520 / 78

Step 6:
If we divide 520 by 78, we get 6 and a remainder of 52.
Record the quotient 6 as the next digit in the result. 
Result so far: 10756.0
Subtract 468 from 520 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 7:
If we divide 520 by 78, we get 6 and a remainder of 52.
Record the quotient 6 as the next digit in the result. 
Result so far: 10756.6
The remainder is 52 after subtracting 468 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 8:
The number 78 fits into 520 6 times, leaving a remainder of 52.
Use 6 as the next digit of our solution. 
Result so far: 10756.66
Subtracting 468 from 520 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final result is 10756.66 with a remainder of 0.052.