# Physics nd the TI84 Calculator

posted by
**Leah** on
.

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