what is 8.33e-5?

Is that an answer you got on your calc?

It   means            $${\mathtt{8.33}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{\left(-{\mathtt{5}}\right)}$$    =   0.0000833

The full answer is 17.6432876311,

but you could round it to the hundredths place

which would be 17.64