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.

Tori is a school janitor . Last week , she picked up a total of 1576 pieces of trash . If she picked up 344 pieces of trash in the classrooms , how many pieces of trash did Tori pick up outside the classrooms ?
1232

Jessica is baking a cake . The recipe calls for 8 cups of flour and 2 cups of sugar . She already put in 4 cups of flour . How many cups of flour does she need to add ?
4

Kaleb was collecting cans for recycling . On Saturday he filled 5 bags up and on Sunday he filled 5 more bags . If each bag had 4 cans in it , how many cans did he pick up total ?

40