profit calculation in options

am new to options, for eg. if i bought xyz 315CE @ 13rs premium and spot price is 313 and 3000 quantity… after one week the premium rises to 18rs and spot price is 330rs… if i sell now how much is profit/loss?

Sell- buy = profit.
(18-13)= 5 (3000) = 15000/-
Refer Varsity