There are 138 students in the third grade of Xiangyang Primary School. The teacher should prepare 3 large homework books and 4 small homework books for each student. How many workbooks should I prepare in total? (do it in two ways)
向阳小学三年级有138个学生，老师要为每个学生准备3个大作业本，4个小作业本．一共要准备多少个作业本？(用两种方法做)
<gadget id="calculator">138 * 3</gadget>
<output>414</output>

<gadget id="calculator">138 * 4</gadget>
<output>552</output>

<gadget id="calculator">414 + 552</gadget>
<output>966</output>

<result>966</result>