Chapter 5 Polynomials and Polynomial Functions - Mixed Review of Problem Solving - Lessons 5.1-5.5 - Page 369: 1a

$$ 1.64\times10^{11}$$

Recall, for a number to be in scientific notation, it must be in the form $a\times 10^b$, where a must be between 1 and 10. Thus, we simplify the expression. If necessary, we change b until the value of a is between 1 and 10. Doing this, we find that the expression becomes: $$ 1.64\times10^{11}$$