There are 81 students in the second grade and 79 students in the third grade. So how many students are there in the third grade and the second grade?
二年级有81名学生，三年级有79名学生．那么三年级和二年级一共有多少名学生？
<gadget id="calculator">81 + 79</gadget>
<output>160</output>

<result>160</result>