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(6.77 × 10−12) ⋅ (1.12 × 10−6) = 7.5864 × 10^-18
(9.1 × 10^9) ⋅ (2.6 × 10^2) = 2.366 × 10^12
(2 × 10^-3) ⋅ (3 × 10^7) = 6 × 10^4