$3,5 \cdot 10^{7} \cdot 4,3 \cdot 10^{-5}$

Step 1 ：Rewrite the numbers in scientific notation: \(3.5 \cdot 10^{7}\) and \(4.3 \cdot 10^{-5}\)

Step 2 ：Multiply the coefficients and add the exponents: \((3.5 \cdot 4.3) \cdot 10^{7-5}\)

Step 3 ：Calculate the result: \(15.05 \cdot 10^{2}\)

Step 4 ：\(\boxed{1505}\)