Express the calculation result with scientific notation: (- 2x * 10 ^ 4) * (3 * 10 ^ 6) * (- 5 * 10 ^ 5)

Express the calculation result with scientific notation: (- 2x * 10 ^ 4) * (3 * 10 ^ 6) * (- 5 * 10 ^ 5)

The original formula = - 2x * 3 * (- 5) * 10 ^ 4 * 10 ^ 6 * 10 ^ (- 5) = 3 * 10 ^ 6