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.

Allie counted the leftover ice cream after a sundae party . She had 0.3333333333333333 carton of rocky road ice cream , 0.3333333333333333 carton of cookie dough ice cream , and 0.16666666666666666 carton of strawberry cheesecake ice cream . How many cartons of ice cream did Allie have in all ?
0.8333333333333334

For the school bake sale Robin made 42 cupcakes . If she sold 22 of them and then made 39 more , how many cupcakes would she have ?
59

Sam found 18 seashells and Mary found 47 seashells on the beach . How many seashells did they find together ?

65