Here is the double integral I need to solve...

$\displaystyle \int\limits_{y=0}^{1}\int\limits_{x=y}^{1}e^{y/x}\,dx\,dy$

Can someone solve this and tell me how to do it. I tried solving it, but the first integral came out to be something I can't take a second integral of, so unless I am supposed to use Riemann sums or something like that it must be wrong. Thanks in advance.