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

Context: The grasshopper, the frog and the mouse had a jumping contest. The grasshopper jumped 19 inches. The frog jumped 10 inches farther than the grasshopper and the mouse jumped 20 inches farther than the frog.

Question: How much farther did the mouse jump than the grasshopper?
30

Context: Josh had some marbles in his collection. He lost 21 marbles. If he has 12 marbles now

Question: How many marbles did he have in his collection?
33

Context: A waiter had 12 customers. After some left he still had 14 customers. Then he got 10 new customers

Question: How many customers does he have now?
24