1. 4 to the 9 power looks something like this 4^9. (There is also another way where a number is in the corner of a number.)
2. It says 5 * 4 to the power of 0. 5 x 4 equals 20. 20 to the 0 power equals 0 because anything to the power of zero is just zero. This sentence is right after the perhantshese, so the product of this is going to get multiplied by the 4^9 power.
3. 0 x 262,144 equals 0. (Or it could just be 262,144. It's one of those.)
