Higher June 2022 Unit 2 Q6

6. Calculate  \(5{\cdot}7 \times 10^5 \times 6{\cdot}4 \times 10^{-2}\).
Circle the correct answer. [1]

\(3{\cdot}648 \times 10^8\)    \(3{\cdot}648 \times 10^4\)    \(-3{\cdot}648 \times 10^6\)    \(3{\cdot}648 \times 10^3\)    \(3{\cdot}648 \times 10^6\)