3. Class 1 organized donations to the disaster area. The first group donated 210 yuan, the second group 187 yuan, and the third and fourth groups donated 387 yuan. How much does each large group donate on average?
3.1班组织给灾区捐款，一大组捐210元，二大组187元，三四大组共捐387元．平均每个大组捐款多少元？
<gadget id="calculator">210 + 187 + 387</gadget>
<output>784</output>

<gadget id="calculator">784 / 4</gadget>
<output>196</output>

<result>196</result>