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