simple EV calculation, but I don't know how to set it up?

[benneh]

apologize if this isn't this place. wasn't sure where else to put this.

this should be really simple, but i just dont know how to set it up. no need to solve it for me, i dont want you guys doin my homework (finals today)

Dealt a 5 card hand from standard 52 card deck

if one king shows up, you win $10. otherwise, you lose $1

what is your EV?

clarification: At least one king. having a pair or trips does not affect the outcome