Answer
$3.24 \times 10^{10}$
Work Step by Step
Write each number in scientific notation to obtain:
$=(6 \times 10^4)(5.4 \times 10^{5})$
Multiply 6 and 5.4 together and the powers of 10 together to obtain:
$=32.4 \times 10^{4+5}
\\=(3.24 \times 10) \times 10^9
\\=3.24 \times 10^{1+9}
\\=3.24 \times 10^{10}$
