(1) Evaluate: \( \left(6.7 \times 10^{4}\right) \times\left(9.1 \times 10^{6}\right) \) (A) \( 6.097 \times 10^{11} \) (B) \( 6.097 \times 10^{10} \) (C) \( 6.097 \times 10^{9} \) (D) \( 60.97 \times 10^{10} \)

Step 1 ：\( \left(6.7 \times 10^{4}\right) \times\left(9.1 \times 10^{6}\right) \) = \( 6.7 \times 9.1 \times 10^{4+6} \)

Step 2 ：\( 6.7 \times 9.1 \times 10^{10} \) = 60.97 \times 10^{10} \)

Step 3 ：\(\text{Standardizing: } 60.97 \times 10^{10} = 6.097 \times 10 \times 10^{10} = 6.097 \times 10^{11} \)