Multiplying Scientific Notation — Examples & Practice

For Halloween, Mr. Smacklemier wants to make assorted bags of candy for his class. He has $3.409\times10^{13}$ students in his class. Each assorted bag of candy contains $5.29\times10^{28}$ pieces of candy. In scientific notation, how many pieces of candy does he need to buy to give everyone in his class an assorted bag?