You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Joan has 47 green and 48 red marbles . Fred took 24 of Joan 's green marbles . How many green marbles does Joan now have ?
23

For Halloween Emily received 5 pieces of candy from neighbors and 13 pieces from her older sister . If she only ate 9 pieces a day , how long would the candy last her ?
2

Joan 's high school played 864 baseball games this year , 128 of the games were played at night . She attended 395 games . How many baseball games did Joan miss ?

469