The sixth grade students participated in the tree planting activity and planted 48 poplar trees. The number of willow trees planted was that of poplar trees (2/3), and the number of plane trees was that of willow trees (3/8). How many sycamore trees were planted?
六年级学生参加植树活动，种了48棵杨树，种的柳树棵树是杨树的(2/3)，梧桐树的棵数是柳树的(3/8)．种了多少棵梧桐树？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">48 * (2/3) * (3/8)</gadget>
<output>12</output>

<result>12</result>