Answer
$5.64 \times 10^{17}$
Work Step by Step
Convert each number to scientific notation to find:
$=(9.4 \times 10^{7})(6 \times 10^{9})$
Multiply the corresponding parts together to find:
$=(9.4 \cdot 6)\times (10^{7} \cdot 10^{9})
\\=56.4 \times 10^{7+9}
\\=56.4 \times 10^{16}
\\=5.64 \times 10^{16+1}
\\=5.64 \times 10^{17}$