Question

Determine the product:

800.5 * (2*6^6)

A: 1.7 * 10^7

B: 1.601 * 10^7

C: 1.7 * 10^9

D: 1.601 * 10^9

Answer 1

`800.5\cdot(2\cdot10^6)=(8.005\cdot10^2)\cdot(2\cdot10^6)\\\\(8.005\cdot2)(10^2\cdot10^6)=16.01\cdot10^(2+6)=1.601\cdot10\cdot10^8\\\\=\boxed{1.601\cdot10^9}\to\boxed{D.}`