Let's divide 390878 by 27
We're looking to find how many times 27 goes into 390878.

Going ahead to step 1:
The number 27 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 27

Moving on to step 2:
27 goes into 39 1 times with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 27 from 39 leaves us with 12.
Bring next digit (0) of the dividend behind the 12 and repeat the process: 120 / 27

Step 3:
When dividing 120 by 27, we get 4 with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Deduct 108 from 120 and we're left with 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 27

Going ahead to step 4:
128 divided by 27 is 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 144.0
If we take 108 away from 128, we end up with 20.
Include the next digit (7) from the dividend after 20, then repeat: 207 / 27

On to step 5:
27 can be fit into 207 7 times, resulting in a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 1447.0
Deduct 189 from 207 and we're left with 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 27

Going ahead to step 6:
When dividing 188 by 27, we get 6 with a remainder of 26.
Write down 6 as next digit of the result. 
Result so far: 14476.0
If we subtract 162 from 188, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 7:
When dividing 260 by 27, we get 9 with a remainder of 17.
Use 9 as the next digit of our solution. 
Result so far: 14476.9
Subtracting 243 from 260 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 8:
170 divided by 27 is 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 14476.96
If we take 162 away from 170, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
27 can be fit into 80 2 times, resulting in a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 14476.962
The remainder is 26 after subtracting 54 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 10:
If we divide 260 by 27, we get 9 and a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 14476.9629
If we take 243 away from 260, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 11:
27 can be fit into 170 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 14476.96296
Subtract 162 from 170 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.

Step 12:
27 goes into 80 2 times with a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 14476.962962
Subtracting 54 from 80 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 13:
27 goes into 260 9 times with a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 14476.9629629
Deduct 243 from 260 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 14:
The number 27 fits into 170 6 times, leaving a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 14476.96296296
Subtracting 162 from 170 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 14476.96296296, with a leftover of 8e-09.