Using Scientific Notation

Perform the operations and write the answer in scientific notation.

ⓐ $\left(8.14\times 10^{-7}\right)\left(6.5\times 10^{10}\right)$
ⓑ $\left(4\times 10^5\right)÷\left(-1.52\times 10^9\right)$
ⓒ $\left(2.7\times 10^5\right)\left(6.04\times 10^{13}\right)$
ⓓ $\left(1.2\times 10^8\right)÷\left(9.6\times 10^5\right)$
ⓔ $\left(3.33\times 10^4\right)\left(-1.05\times 10^7\right)\left(5.62\times 10^5\right)$

OpenStax, Algebra and Trigonometry 2e · §1.2 Exponents and Scientific Notation · Example 12