rovide results to the following using the correct significant figures. \[ \left.1.23 \times 10^{2}+34.5\right) \div\left(2.3 \times 10^{-3}\right)= \]

Step 1 ：Calculate the numerator: \(1.23 \times 10^{2} + 34.5 = 1.47 \times 10^{2}\)

Step 2 ：Divide the numerator by the denominator: \(\frac{1.47 \times 10^{2}}{2.3 \times 10^{-3}} = 6.39 \times 10^{4}\)

Step 3 ：\(\boxed{6.39 \times 10^{4}}\)