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

[EX Q]: Katie was selling her necklaces at a garage sale . She sold 4 bead necklaces and 3 gem stone necklaces . If each necklace cost 3 dollars , how much money did she earn ?
[EX A]: 21

[EX Q]: A chef needs to cook 12 potatoes . He has already cooked 6 . If each potato takes 6 minutes to cook , how long will it take him to cook the rest ?
[EX A]: 36

[EX Q]: The junior ranger asked Christian to help him place 420 seedlings in packets . If every packet needs to contain 7 seeds , how many packets do they need ?
[EX A]:
60