Question 738598
Look for the {{{e^x}}} button or key.  


Press these buttons or keys: [6], [(-)], [{{{e^x}}}], [-], [4],[=],
then maybe wait 2 or 3 seconds for the calculator to respond,
and then continue: [÷], [3], [=].


You should see the answer, very near or equal to -1.3325071, depending on how well your calculator handles the accuracy.


Note that the negation key might be shown labeled as [(+/-)] instead of [(-)].
Note also, my key or button sequence given is based on a typical old style electronic handheld scientific calculator, not a graphing calculator.