Answer
$1.9*10^8 years$
Work Step by Step
We use conversions to find:
$ \frac{6.022*10^{23}}{1} \frac {1}{3*10^8} \frac {day}{8 hours} \frac{1 hour}{3600 s} \frac{1 year}{365.25 days} $
This gives:
$1.9*10^8 years$
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