Recall that the PE ratio is the ratio of the price per share to the earnings per$$ share, including earnings from the past $4$ quarters. Compute the PE ratios of the following companies.

$($a$)$

The share price is $$$$11\mathrm{.}62$ and the earnings per share is $$$$0\mathrm{.}61.$

$($b$)$

The share price is $$$$35\mathrm{.}84,$ there are $1\mathrm{.}5$ billion$$ shares, and the company made $$$$5\mathrm{.}25$ billion in profit over the past $12$ months.

$($c$)$

The share price is $$$$454\mathrm{.}72,$ and over each of the past $4$ quarters, the company made $$$$2\mathrm{.}23,$$$1\mathrm{.}45,$$$1\mathrm{.}72,$ and $$$$2\mathrm{.}16$ in earnings per share.

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Part $1$

$($a$)$ The PE ratio is approximately