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.

[Q]: 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 ?
[A]: 4


[Q]: The tallest player on the basketball team is 77.75 inches tall . This is 9.5 inches taller than the shortest player . How tall is the shortest player , in inches ?
[A]: 68.25


[Q]: There are 69 erasers in a box . Jane has 15 erasers in a bag . Doris takes 54 erasers out of the box . How many erasers are left in the box ?
[A]:
15