388488 ÷ 78 
Our goal is to divide 388488 by 78.

Step 1:
When dividing 3 by 78, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 78

Advancing to step 2:
78 goes into 38 0 times with a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 38 and we're left with 38.
Bring next digit (8) of the dividend behind the 38 and repeat the process: 388 / 78

Advancing to step 3:
388 divided by 78 is 4 with a remainder of 76.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 312 from 388, we get 76.
Grab the next digit (4) from the dividend, add it to 76, then carry on: 764 / 78

Advancing to step 4:
When dividing 764 by 78, we get 9 with a remainder of 62.
Use 9 as the next digit of our solution. 
Result so far: 49.0
Subtracting 702 from 764 leaves us with 62.
Take the next digit (8) from the dividend and append it to 62, then repeat: 628 / 78

Let's proceed to step 5:
If we divide 628 by 78, we get 8 and a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 498.0
If we subtract 624 from 628, we get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 78

Advancing to step 6:
78 goes into 48 0 times with a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 4980.0
Subtracting 0 from 48 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 7:
When dividing 480 by 78, we get 6 with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 4980.6
Subtracting 468 from 480 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 8:
When dividing 120 by 78, we get 1 with a remainder of 42.
Record the quotient 1 as the next digit in the result. 
Result so far: 4980.61
The remainder is 42 after subtracting 78 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 9:
When dividing 420 by 78, we get 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 4980.615
Deduct 390 from 420 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 10:
When dividing 300 by 78, we get 3 with a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 4980.6153
Subtracting 234 from 300 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 11:
660 divided by 78 is 8 with a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 4980.61538
If we subtract 624 from 660, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 12:
When dividing 360 by 78, we get 4 with a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 4980.615384
Deduct 312 from 360 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 13:
If we divide 480 by 78, we get 6 and a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 4980.6153846
The remainder is 12 after subtracting 468 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 14:
78 can be fit into 120 1 times, resulting in a remainder of 42.
Record the quotient 1 as the next digit in the result. 
Result so far: 4980.61538461
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 4980.61538461, with a leftover of 4.2e-08.