There are 178 students in the third grade and 185 students in the fourth grade of Dongyue Primary School. On average, each person donates 4 yuan to the Hope Project. How much is the total donation for the two grades?
东岳小学三年级有178人，四年级有185人，平均每人向希望工程捐款4元，两个年级共捐款多少元？
<gadget id="calculator">178 + 185</gadget>
<output>363</output>

<gadget id="calculator">363 * 4</gadget>
<output>1_452</output>

<result>1_452</result>