Corona again

If the population on long island is 7.75 million and the coronavirus has affected 22,178. What percent of the population is affected. (looking for 1 in? If possible)

Correct result:

p =  0.2862 %
r =  1:349

Solution:

$p=100\cdot {\displaystyle \frac{22178}{7.75\cdot 1e_6}}=0.2862\mathrm{\%}$

$r={\displaystyle \frac{1}{[7750000\mathrm{/}22178]}}={\displaystyle \frac{1}{349}}\approx 0.0029=1:349$

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