The school organized a donation activity of "giving love" to the Yushu disaster area. The average donation of 4 classes in the fifth grade was 220.5 yuan per class, and the average donation of 4 classes in the sixth grade was 242.8 yuan per class. How much is the average donation per class in the fifth and sixth grades?
学校组织向玉树灾区"献爱心"的捐款活动，五年级4个班平均每班捐款220.5元，六年级4个班平均每班捐款242.8元，五、六年级平均每班捐款多少元？
<gadget id="calculator">220.5 * 4</gadget>
<output>882</output>

<gadget id="calculator">242.8 * 4</gadget>
<output>971.2</output>

<gadget id="calculator">882 + 971.2</gadget>
<output>1_853.2</output>

<gadget id="calculator">4 + 4</gadget>
<output>8</output>

<gadget id="calculator">1_853.2 / 8</gadget>
<output>231.65</output>

<result>231.65</result>