300665 ÷ 78 
Let's see how many times 78 fits into 300665.

Let's proceed 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
If we subtract 0 from 3, we get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 78

Step 2:
The number 78 fits into 30 0 times, leaving a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 78

Going ahead to step 3:
78 can be fit into 300 3 times, resulting in a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 234 from 300 leaves us with 66.
Fetch the next digit (6) from the dividend, attach it to 66 and continue: 666 / 78

Let's proceed to step 4:
78 goes into 666 8 times with a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 38.0
The remainder is 42 after subtracting 624 from 666.
Include the next digit (6) from the dividend after 42, then repeat: 426 / 78

Advancing to step 5:
If we divide 426 by 78, we get 5 and a remainder of 36.
The number 5 becomes the next digit in our result. 
Result so far: 385.0
If we subtract 390 from 426, we get 36.
Fetch the next digit (5) from the dividend, attach it to 36 and continue: 365 / 78

Advancing to step 6:
78 can be fit into 365 4 times, resulting in a remainder of 53.
Use 4 as the next digit of our solution. 
Result so far: 3854.0
The remainder is 53 after subtracting 312 from 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 7:
If we divide 530 by 78, we get 6 and a remainder of 62.
Use 6 as the next digit of our solution. 
Result so far: 3854.6
If we subtract 468 from 530, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 8:
The number 78 fits into 620 7 times, leaving a remainder of 74.
Record the quotient 7 as the next digit in the result. 
Result so far: 3854.67
If we subtract 546 from 620, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 9:
If we divide 740 by 78, we get 9 and a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 3854.679
If we take 702 away from 740, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 10:
78 goes into 380 4 times with a remainder of 68.
Write down 4 as next digit of the result. 
Result so far: 3854.6794
Subtract 312 from 380 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 11:
680 divided by 78 is 8 with a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 3854.67948
Deduct 624 from 680 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 12:
78 goes into 560 7 times with a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 3854.679487
If we take 546 away from 560, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 13:
The number 78 fits into 140 1 times, leaving a remainder of 62.
The next digit of our result is 1. 
Result so far: 3854.6794871
The remainder is 62 after subtracting 78 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 14:
620 divided by 78 is 7 with a remainder of 74.
The next digit of our result is 7. 
Result so far: 3854.67948717
If we take 546 away from 620, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

After the division, we end up with 3854.67948717 and a remainder of 7.4e-08.