In the third grade of Experimental Primary School, there are 164 boys and 158 girls, with an average of 46 students in each class. How many classes are there in the third grade of Experimental Primary School?
实验小学三年级有男生164人、女生158人，平均每班有46人．实验小学三年级共有几个班？
<gadget id="calculator">164 + 158</gadget>
<output>322</output>

<gadget id="calculator">322 / 46</gadget>
<output>7</output>

<result>7</result>