You do it yourself :)
Convert the answer to scientific notation by moving the decimal point until the number is between 1 and 10. For a number like 652,000,000, you would move the decimal point 8 places to the left. That gives you 6.52.
The number of decimal places you moved is the power of 10 that you will write. The direction the decimal moved determines whether the power of 10 is negative or positive.
Since we moved 8 places to the left, we would right 6.52 x 108 = 652,000,000
Sorry to say, but you must convert the output to scientific notation yourself.
I hope this was helpful :)