Posted by **Leah** on Tuesday, February 8, 2011 at 4:54pm.

Could someone remind me how to calculate this on the TI-84 Calculator:

Which buttons do I hit for this:

3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21

It should come out to be 5.55 *10^-7 but I'm not doing the input correct

Please help

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