There is a garden in the school, in which the area of rose flowers accounts for (2/7), the area of amaryllis accounts for (1/5), and the area of peony flowers is more than the sum of the areas of rose flowers and amaryllis (1/4) of the total area. ． What percentage of the area of peony flowers?
学校有一个花园，其中月季花的面积占(2/7)，朱顶红的面积占(1/5)，牡丹花的面积比月季花和朱顶红的面积总和还多占总面积的(1/4)．牡丹花的面积占几分之几？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(2/7) + (1/5) + (1/4)</gadget>
<output>103/140 = around 0.735714</output>

<result>103/140 = around 0.735714</result>