We're dividing 966429 by 78 
Let's see how many times 78 fits into 966429.

On to step 1:
9 divided by 78 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (6) from the dividend to 9 and continue with: 96 / 78

Step 2:
The number 78 fits into 96 1 times, leaving a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 18 after subtracting 78 from 96.
Append the next digit (6) from the dividend to 18 and continue with: 186 / 78

Let's proceed to step 3:
The number 78 fits into 186 2 times, leaving a remainder of 30.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 156 from 186, we get 30.
Append the next digit (4) from the dividend to 30 and continue with: 304 / 78

On to step 4:
When dividing 304 by 78, we get 3 with a remainder of 70.
Put 3 as the next digit of the answer. 
Result so far: 123.0
Deduct 234 from 304 and we're left with 70.
Grab the next digit (2) from the dividend, add it to 70, then carry on: 702 / 78

Advancing to step 5:
78 goes into 702 9 times with a remainder of 0.
The next digit of our result is 9. 
Result so far: 1239.0
Subtracting 702 from 702 leaves us with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 78

Moving on to step 6:
78 can be fit into 9 0 times, resulting in a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 12390.0
Deduct 0 from 9 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
The number 78 fits into 90 1 times, leaving a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 12390.1
The remainder is 12 after subtracting 78 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 8:
78 goes into 120 1 times with a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 12390.11
If we subtract 78 from 120, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final result is 12390.11 with a remainder of 0.042.