Qingshan Village planted 320 trees this year, 60% of which were poplars. How many sycamore trees are planted?
青山村今年种树320棵，种的梧桐树是杨树的60%．种梧桐树有多少棵？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">320 / (8/5)</gadget>
<output>200</output>

<gadget id="calculator">320 - 200</gadget>
<output>120</output>

<result>120</result>