Class 1 of the sixth year was divided into three groups to participate in tree planting activities. Group A planted 60 trees, while Group B planted 1 tree (4/5), and Group C planted less than Group B (2/15). How many trees are planted in Group C?
六年1班分三个小组参加植树活动，甲组植树60棵，是乙组植树棵树的(4/5)，丙组比乙组少植(2/15)．丙组植树多少棵？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">60 / (4/5)</gadget>
<output>75</output>

<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">1 - (2/15)</gadget>
<output>13/15 = around 0.866667</output>

<gadget id="calculator">75 * (13/15)</gadget>
<output>65</output>

<result>65</result>