Put flour into a basket, put it into 12 bags, and the weight of the basket is 965 kg; put it into 18 bags, and the weight of the basket is 1445 kg, how much is a bag of flour?
向一个筐里装面粉，装入12袋，连筐共重965千克；装入18袋，连筐共重1445千克，一袋面粉多少千克？
<gadget id="calculator">1_445 - 965</gadget>
<output>480</output>

<gadget id="calculator">480 / 6</gadget>
<output>80</output>

<result>80</result>