How do you express $2.1times10^7$ in standard notation?

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Answer 1 · 2017-05-23T07:26:47

$21,000,000$
Or 21 million

Your number contains 6 zeros after writing 21. It means your number is 21 million.

Your number is
$21,000,000$ (based on American style)

How do you express 2.1times10^72.1times10^7 in standard notation?