We divide 386860 by 78
We're looking to find how many times 78 goes into 386860.

Step 1:
78 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 78

Advancing to step 2:
When dividing 38 by 78, we get 0 with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 38 leaves us with 38.
Fetch the next digit (6) from the dividend, attach it to 38 and continue: 386 / 78

Advancing to step 3:
386 divided by 78 is 4 with a remainder of 74.
The next digit of our result is 4. 
Result so far: 4.0
If we take 312 away from 386, we end up with 74.
Fetch the next digit (8) from the dividend, attach it to 74 and continue: 748 / 78

On to step 4:
If we divide 748 by 78, we get 9 and a remainder of 46.
The next digit of our result is 9. 
Result so far: 49.0
Subtracting 702 from 748 leaves us with 46.
Append the next digit (6) from the dividend to 46 and continue with: 466 / 78

Step 5:
The number 78 fits into 466 5 times, leaving a remainder of 76.
The number 5 becomes the next digit in our result. 
Result so far: 495.0
If we take 390 away from 466, we end up with 76.
Include the next digit (0) from the dividend after 76, then repeat: 760 / 78

Let's proceed to step 6:
When dividing 760 by 78, we get 9 with a remainder of 58.
The next digit of our result is 9. 
Result so far: 4959.0
Subtracting 702 from 760 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 7:
The number 78 fits into 580 7 times, leaving a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 4959.7
If we subtract 546 from 580, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 8:
78 goes into 340 4 times with a remainder of 28.
The next digit of our result is 4. 
Result so far: 4959.74
If we subtract 312 from 340, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 9:
78 can be fit into 280 3 times, resulting in a remainder of 46.
Put 3 as the next digit of the answer. 
Result so far: 4959.743
Subtracting 234 from 280 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 10:
If we divide 460 by 78, we get 5 and a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 4959.7435
Deduct 390 from 460 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 11:
78 can be fit into 700 8 times, resulting in a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 4959.74358
Subtracting 624 from 700 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 12:
78 goes into 760 9 times with a remainder of 58.
Record the quotient 9 as the next digit in the result. 
Result so far: 4959.743589
The remainder is 58 after subtracting 702 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 13:
The number 78 fits into 580 7 times, leaving a remainder of 34.
Put 7 as the next digit of the answer. 
Result so far: 4959.7435897
Subtracting 546 from 580 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 14:
78 can be fit into 340 4 times, resulting in a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 4959.74358974
If we take 312 away from 340, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 4959.74358974, with a leftover of 2.8e-08.