There are 12 butterflies in the garden, and the number of butterflies is twice that of bees, how many butterflies and bees are there altogether?
花园里有12只蝴蝶，蝴蝶的只数是蜜蜂的2倍，蝴蝶和蜜蜂一共有多少只？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">12 + 6</gadget>
<output>18</output>

<result>18</result>