Converting $q/m_e$ to $C/kg$ [closed]

I was doing some chemistry problems when I came across a question asking to find the charge to mass ratio of an electron in $q/m_e$. Then, it told me to compare what I found to the accepted value, at $1.76 x 10^{11} C/kg$ and calculate my percent of error. How do I convert the two?

The thing is, this is a really elementary question. Not just in the sense of the concepts involved being simple (which is fine), but also in the sense that it requires almost no work, which suggest that perhaps you haven't given it a fair chance yourself. Did you try looking up the known values of $q$ and $m_e$? Did you run into a problem when doing so? – David Zaslavsky Sep 16 '12 at 3:33