Which of the following correctly orders the values from smallest to largest?

Compute the result of the following division, ensuring the final answer is in correct scientific notation: $\frac{2.0\times 10^4}{8.0\times 10^2}$

Fill in the blank: When converting the decimal $0.0000004$ to scientific notation, the exponent $n$ is negative because the original value is __________ than 1.

The number $62.05\times 10^{-2}$ is not in scientific notation. Which of the following is the correct way to rewrite it in scientific notation?

Fill in the blank: To calculate $(7.1\times 10^8) - (5.0\times 10^7)$, we can rewrite the expression as , which results in _____.