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

The school is planning a field trip . There are 28 students and 7 seats on each school bus . How many buses are needed to take the trip ?
4

Fred has 709 green balloons , he gave Sandy 221 of the balloons . How many green balloons does he now have ?
488

The Litter Patrol picked up 10 glass bottles and 8 aluminum cans on Saturday . How many pieces of litter did they pick up altogether ?

18