We're dividing 299991 by 78 
We want to divide 299991 by 78.

Step 1:
78 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 78

Going ahead to step 2:
The number 78 fits into 29 0 times, leaving a remainder of 29.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 29 leaves us with 29.
Take the next digit (9) from the dividend and append it to 29, then repeat: 299 / 78

Advancing to step 3:
The number 78 fits into 299 3 times, leaving a remainder of 65.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 65 after subtracting 234 from 299.
Take the next digit (9) from the dividend and append it to 65, then repeat: 659 / 78

Step 4:
78 can be fit into 659 8 times, resulting in a remainder of 35.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
Subtracting 624 from 659 leaves us with 35.
Fetch the next digit (9) from the dividend, attach it to 35 and continue: 359 / 78

Let's proceed to step 5:
78 can be fit into 359 4 times, resulting in a remainder of 47.
The number 4 becomes the next digit in our result. 
Result so far: 384.0
If we subtract 312 from 359, we get 47.
Take the next digit (1) from the dividend and append it to 47, then repeat: 471 / 78

Going ahead to step 6:
The number 78 fits into 471 6 times, leaving a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 3846.0
Subtracting 468 from 471 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
When dividing 30 by 78, we get 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 3846.0
Subtracting 0 from 30 leaves us 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.

Let's proceed to step 8:
78 goes into 300 3 times with a remainder of 66.
The next digit of our result is 3. 
Result so far: 3846.03
The remainder is 66 after subtracting 234 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 9:
When dividing 660 by 78, we get 8 with a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 3846.038
The remainder is 36 after subtracting 624 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
360 divided by 78 is 4 with a remainder of 48.
The next digit of our result is 4. 
Result so far: 3846.0384
If we subtract 312 from 360, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 11:
The number 78 fits into 480 6 times, leaving a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 3846.03846
If we take 468 away from 480, we end up 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.

Moving on to step 12:
120 divided by 78 is 1 with a remainder of 42.
Record the quotient 1 as the next digit in the result. 
Result so far: 3846.038461
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.

Moving on to step 13:
The number 78 fits into 420 5 times, leaving a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 3846.0384615
The remainder is 30 after subtracting 390 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 14:
If we divide 300 by 78, we get 3 and a remainder of 66.
Put 3 as the next digit of the answer. 
Result so far: 3846.03846153
The remainder is 66 after subtracting 234 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

The final outcome is 3846.03846153, with a leftover of 6.6e-08.