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

feeling sad about their loss on their first game chuck and his teammates were determined to win on their next match against the yellow team . they scored 72 points and the yellow team scored 55 how large was their lead ?
17

for the walls of the house he would use 9 large planks of wood . if each plank of wood needs 8 pieces of nails to be secured how many nails does john need for the house wall ?
72

connie has 323 marbles . juan has 175 more marbles than connie . how many marbles does juan have ?
498