The price of 2 coconut trees = the price of 5 poplar trees, the price of 3 poplar trees = the price of 12 pine trees, the price of 6 coconut trees = the price of how many pine trees.
2棵椰树的价钱=5棵杨树的价钱，3棵杨树的价钱=12棵松树的价钱，6棵椰树的价钱=多少棵松树的价钱．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">3 * (5/3) * 12</gadget>
<output>60</output>

<result>60</result>