The students subscribed to "Primary School Student Newspaper". There are 210 subscriptions in the fourth grade, and 4 classes in the third grade, with an average of 48 subscriptions per class. According to the above conditions, please ask a two-step calculation problem and answer it.
同学们订阅《小学生报》，四年级共订210份，三年级有4个班，平均每班订48份．根据以上条件，请你提一个两步计算的问题并解答．
<gadget id="calculator">48 * 4</gadget>
<output>192</output>

<gadget id="calculator">192 + 210</gadget>
<output>402</output>

<result>402</result>