The villages of Tuanjie Town are planting forests on a mountain. They plan to use (2/5) of the total area to plant fruit trees, (1/3) to plant pagoda trees, and the rest to plant pines and cypresses. What percentage of the total area is the area planted with pines and cypresses?
团结镇各村在一座山上造林，计划用总面积的(2/5)种果树，(1/3)种槐树，其余的种松柏，种松柏的面积占总面积的几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (2/5) - (1/3)</gadget>
<output>4/15 = around 0.266667</output>

<result>4/15 = around 0.266667</result>