The experimental primary school needs to buy a composition guide book for each of the students in the fourth and fifth grades at a price of 15 yuan. It is known that there are 234 students in the fourth grade and 228 students in the fifth grade. How much does it cost for the two grades?
实验小学要为四、五年级的同学每人购买一本价格是15元的作文辅导书，已知四年级有234人，五年级有228人，两个年级一共需要多少钱？
<gadget id="calculator">234 + 228</gadget>
<output>462</output>

<gadget id="calculator">15 * 462</gadget>
<output>6_930</output>

<result>6_930</result>