We're dividing 486651 by 78 
We want to divide 486651 by 78.

Moving on to step 1:
The number 78 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 78

On to step 2:
48 divided by 78 is 0 with a remainder of 48.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 48 to get 48.
Take the next digit (6) from the dividend and append it to 48, then repeat: 486 / 78

Step 3:
When dividing 486 by 78, we get 6 with a remainder of 18.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 468 from 486 leaves us with 18.
Take the next digit (6) from the dividend and append it to 18, then repeat: 186 / 78

Let's proceed to step 4:
If we divide 186 by 78, we get 2 and a remainder of 30.
Use 2 as the next digit of our solution. 
Result so far: 62.0
Subtracting 156 from 186 leaves us with 30.
Bring next digit (5) of the dividend behind the 30 and repeat the process: 305 / 78

Step 5:
The number 78 fits into 305 3 times, leaving a remainder of 71.
The number 3 becomes the next digit in our result. 
Result so far: 623.0
The remainder is 71 after subtracting 234 from 305.
Bring next digit (1) of the dividend behind the 71 and repeat the process: 711 / 78

Step 6:
78 can be fit into 711 9 times, resulting in a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 6239.0
Deduct 702 from 711 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.

Going ahead to step 7:
The number 78 fits into 90 1 times, leaving a remainder of 12.
The next digit of our result is 1. 
Result so far: 6239.1
Subtract 78 from 90 to get 12.
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.
Put 1 as the next digit of the answer. 
Result so far: 6239.11
Deduct 78 from 120 and we're left with 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 outcome is 6239.11, with a leftover of 0.042.