## Thinking Mathematically (6th Edition)

$5.36 \times 10^{10}$
1 billion is $10^9$ This means that $53.6$ billion is equal to the following: $\\= 53.6 \times 10^9 \\=(5.36 \times 10) \times 10^9 \\=5.36 \times 10^{1+9} \\=5.36 \times 10^{10}$