To simplify the expression \((5.6 × 10^8) ÷ (8 × 10^5)\), we can separate the numerical coefficients and the powers of ten:
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Divide the coefficients: \[ \frac{5.6}{8} = 0.7 \]
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Divide the powers of ten: \[ \frac{10^8}{10^5} = 10^{8-5} = 10^3 \]
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Combine the results: \[ 0.7 × 10^3 \]
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Convert \(0.7\) to scientific notation: \[ 0.7 = 7 × 10^{-1} \] Therefore, \[ 0.7 × 10^3 = 7 × 10^{-1} × 10^3 = 7 × 10^{3-1} = 7 × 10^2 \]
Now we can compare the result \(7 × 10^2\) with the given options.
The correct answer is: D. \(7 × 10^2\).