Can someone help me figure out the calories of this?

Hi, I'm back home for the summer and I've found these cheese slices in my family's fridge. The package is 1.5kg, there's 90 slices but the only nutritional information is of per 100g. The 100g is 1662kjs. I'm trying to figure out how many kjs or calories are in one slice (I'm terrible at math) and I cannot find a brand name as the package has been cut. Can someone help me out for calories per slice?