Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

adam put 18 items in the shopping cart . after deleting some he had 8 left . how many items did adam delete ?
10

greg and brad started reading their books at the same time . greg read 18 pages a day . brad read 26 pages a day . how many more pages did brad read than greg ?
8

andrew annie 's other friend was assigned with the preparation of appetizers . he decided to bring 30 hotdogs on sticks 20 pieces of bite-sized cheese pops and 40 pieces of chicken nuggets . how many portions of appetizers did andrew bring in all ?
90