Nanotechnology is a technology of the very small: on the order of one billionth of a meter. Researchers are looking to power tiny devices with energy generated by the human body. (Source: Z. Wang, \"Self-Powered Nanotech,\" Scientific American, January 2008.)

(a) Write one billionth in scientific notation.

(b) While typing, a person's fingers generate about 2.2 X 10³ watt of electrical energy. Write this number in standard (decimal) form.