Answer:

Explanation:

Begin by solving the expression inside the brackets: 100000 x 90000 = 9,000,000,000

Next, solve the expression inside the denominator of the fraction: 2000² = 4,000,000

Simplify the expression in the numerator by dividing it by the result obtained in step 2: 9,000,000,000 ÷ 4,000,000 = 2,250

Multiply the result obtained in step 3 by the expression outside the brackets: 6.673 × 10⁻¹¹ x 2,250 = 1.50175 × 10⁻⁷