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.

willie the town baker wanted to make the biggest cake their town has ever seen . first he prepared the flour . he is planning to use 501 lbs . of flour . if he has 294 lbs . of flour stored in his bakery how much more flour does he need to buy ?
207

for a potluck lunch bianca brought 9 bottles of soda . if someone else had already brought 8 sodas how many were there total ?
17

lana 's mom was buying extra school supplies for her and her siblings . if she bought 3 packs of glue sticks with 7 glue sticks in each pack how many did she get total ?
21