The cafeteria shipped 600 kilograms of rice, and after eating for four days, there was still 340 kilograms left. How many kilograms are eaten per day on average? (column comprehensive calculation)
食堂运来大米600千克，吃了四天后还剩340千克，平均每天吃多少千克？(列综合式计算)
<gadget id="calculator">600 - 340</gadget>
<output>260</output>

<gadget id="calculator">260 / 4</gadget>
<output>65</output>

<result>65</result>