Hey there!
3.0 * 10^8
= 3.0 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10
= 3.0 * 100 * 100 * 100 * 100
= 3.0 * 10,000 * 10,000
= 3.0 * 100,000,000
= 300,000,000
Therefore, your answer is:
300,000,000
Good luck on assignment & enjoy your day!
~Amphitrite1040:)