Let's divide 703439 by 78
Our goal is to divide 703439 by 78.

On to step 1:
78 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 78

Moving on to step 2:
70 divided by 78 is 0 with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 70 to get 70.
Include the next digit (3) from the dividend after 70, then repeat: 703 / 78

Moving on to step 3:
703 divided by 78 is 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 702 from 703 to get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 78

Moving on to step 4:
The number 78 fits into 14 0 times, leaving a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 90.0
Subtract 0 from 14 to get 14.
Grab the next digit (3) from the dividend, add it to 14, then carry on: 143 / 78

Let's proceed to step 5:
When dividing 143 by 78, we get 1 with a remainder of 65.
The number 1 becomes the next digit in our result. 
Result so far: 901.0
If we take 78 away from 143, we end up with 65.
Include the next digit (9) from the dividend after 65, then repeat: 659 / 78

Going ahead to step 6:
659 divided by 78 is 8 with a remainder of 35.
Put 8 as the next digit of the answer. 
Result so far: 9018.0
If we subtract 624 from 659, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 7:
78 goes into 350 4 times with a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 9018.4
If we subtract 312 from 350, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 8:
When dividing 380 by 78, we get 4 with a remainder of 68.
The next digit of our result is 4. 
Result so far: 9018.44
If we subtract 312 from 380, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

After the division, we end up with 9018.44 and a remainder of 0.068.