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.
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Question: 64 children were riding on the bus . At the bus stop , some more children got on the bus . Then there were 78 children altogether on the bus . How many children got on the bus at the bus stop ?

Answer: 14

Question: Benny found 66 seashells and 49 starfish on the beach . He gave 52 of the seashells to Jason . How many seashells does Benny now have ?

Answer: 14

Question: Milford Lake was originally blue because it only had 809 algae plants . Now there are 3263 algae plants , and the lake has turned green . How many more algae plants are in Milford Lake now ?

Answer:
2454