First draw 24 △, and then draw 〇, how many 〇 should be drawn so that 〇 is (2/3) of △.
先画24个△，再画〇，要使得〇是△的(2/3)，应画多少个〇．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">24 * (2/3)</gadget>
<output>16</output>

<result>16</result>