4 boxes of bees can produce 300 kg of honey a year. Kobayashi's family has 12 boxes of such bees, how many kilograms of honey can be produced in a year?
4箱蜜蜂一年可以酿300千克蜂蜜．小林家养了这样的蜜蜂12箱，一年可以酿多少千克蜂蜜？
<gadget id="calculator">300 / 4</gadget>
<output>75</output>

<gadget id="calculator">75 * 12</gadget>
<output>900</output>

<result>900</result>