There are 150 lychee trees in the orchard, and the longan trees are 2/3 of the lychee trees. How many longan trees are there?
果园里有荔枝树150棵，龙眼树是荔枝树的(2/3)，有多少棵龙眼树？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">150 * (2/3)</gadget>
<output>100</output>

<result>100</result>