If an electronic computer performs 10 ^ 10 operations per second, how many operations can it perform in 3 * 10 ^ 5 seconds?

If an electronic computer performs 10 ^ 10 operations per second, how many operations can it perform in 3 * 10 ^ 5 seconds?

3 * 10 ^ (10 + 5) = 3 * 10 ^ 15 times