There are 120 poplar trees, (5/6) of poplar trees are as many as (2/3) of willow trees. How many willow trees are there?
杨树120棵，杨树棵数的(5/6)与柳树的(2/3)一样多．柳树有多少棵？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(5/6) / (2/3)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">120 * (5/4)</gadget>
<output>150</output>

<result>150</result>