Yucai Primary School needs to buy an extra-curricular tutoring book priced at 13 yuan for each of the fifth grade students. It is known that there are 168 students in the fifth grade, how much is the total cost?
育才小学要为五年级的学生每人买一本价格为13元的课外辅导书．已知五年级有168名学生，一共需要多少钱？
<gadget id="calculator">13 * 168</gadget>
<output>2_184</output>

<result>2_184</result>