The restaurant bought 960 kilograms of rice and transported 3 trucks, leaving 120 kilograms. How many kilograms of rice are transported on average per truck?
饭店买来大米960千克，运了3车，还剩下120千克，平均每车运多少千克大米？
<gadget id="calculator">960 - 120</gadget>
<output>840</output>

<gadget id="calculator">840 / 3</gadget>
<output>280</output>

<result>280</result>