Hope Primary School originally had 684 students. This year, 3 classes with 42 students in each class graduated, and 4 classes of freshmen with 36 students in each class were recruited. How many students are there in the primary school now?
希望小学原有学生684人，今年毕业了3个班，每班42人，又招收一年级新生4个班，每个班36人，现在该小学有学生多少人？
<gadget id="calculator">42 * 3</gadget>
<output>126</output>

<gadget id="calculator">684 - 126</gadget>
<output>558</output>

<gadget id="calculator">36 * 4</gadget>
<output>144</output>

<gadget id="calculator">558 + 144</gadget>
<output>702</output>

<result>702</result>