The answer is 1.2 x 10^8.
​When you calculate 52,000,000 by 24, you get 1,248,000,000 and because ofthe rule of scientific notation, you get 1.2 x 10^#. Now, if you count from the right, there are six 0's and the digits 2, 4, and 8. So you can count 9 digits from the right before you can get to where the decimal point is. Therefore it is 1.2 x 10^8.
​ The rule of scientific notation: you can only have a one digit number before the decimal point. In this case it is 1 (from 1.2). You can't have 10 or 0 in this spot and are reserved for digits 1-9.