The fruit shop shipped 12 boxes each of apples and grapes. Apples are 25kg per box and grapes are 15kg per box. How many kilograms of fruit are shipped in total?
水果店运来苹果、葡萄各12箱．苹果每箱25千克，葡萄每箱15千克．一共运来水果多少千克？
<gadget id="calculator">12 * 25</gadget>
<output>300</output>

<gadget id="calculator">12 * 15</gadget>
<output>180</output>

<gadget id="calculator">300 + 180</gadget>
<output>480</output>

<result>480</result>