We look at the division of 278570 by 15 
We want to divide 278570 by 15.

On to step 1:
When dividing 2 by 15, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 15

Step 2:
If we divide 27 by 15, we get 1 and a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 12 after subtracting 15 from 27.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 15

Step 3:
The number 15 fits into 128 8 times, leaving a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtract 120 from 128 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 15

Advancing to step 4:
15 can be fit into 85 5 times, resulting in a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 185.0
Subtracting 75 from 85 leaves us with 10.
Take the next digit (7) from the dividend and append it to 10, then repeat: 107 / 15

Going ahead to step 5:
If we divide 107 by 15, we get 7 and a remainder of 2.
The next digit of our result is 7. 
Result so far: 1857.0
Deduct 105 from 107 and we're left with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 15

On to step 6:
15 can be fit into 20 1 times, resulting in a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 18571.0
If we subtract 15 from 20, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
The number 15 fits into 50 3 times, leaving a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 18571.3
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 8:
The number 15 fits into 50 3 times, leaving a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 18571.33
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 18571.33 with a remaining 0.005.