305012 ÷ 78 
We want to divide 305012 by 78.

Advancing to step 1:
When dividing 3 by 78, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 78

Step 2:
78 goes into 30 0 times with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Grab the next digit (5) from the dividend, add it to 30, then carry on: 305 / 78

Going ahead to step 3:
The number 78 fits into 305 3 times, leaving a remainder of 71.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 234 from 305 to get 71.
Append the next digit (0) from the dividend to 71 and continue with: 710 / 78

On to step 4:
When dividing 710 by 78, we get 9 with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 39.0
Subtract 702 from 710 to get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 78

Let's proceed to step 5:
81 divided by 78 is 1 with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 391.0
Subtracting 78 from 81 leaves us with 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 78

Step 6:
When dividing 32 by 78, we get 0 with a remainder of 32.
Write down 0 as next digit of the result. 
Result so far: 3910.0
If we take 0 away from 32, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 7:
78 goes into 320 4 times with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 3910.4
Subtract 312 from 320 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
The number 78 fits into 80 1 times, leaving a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 3910.41
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 9:
The number 78 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 3910.41
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
78 goes into 200 2 times with a remainder of 44.
Put 2 as the next digit of the answer. 
Result so far: 3910.4102
Subtracting 156 from 200 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 11:
440 divided by 78 is 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 3910.41025
Deduct 390 from 440 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 12:
If we divide 500 by 78, we get 6 and a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 3910.410256
If we subtract 468 from 500, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 13:
320 divided by 78 is 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 3910.4102564
Subtract 312 from 320 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 14:
When dividing 80 by 78, we get 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 3910.41025641
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

In conclusion, the division gives 3910.41025641 with a balance of 2e-09.