If a circle is divided into three sectors, and the areas of two sectors account for 35% and 25% of the area of the whole circle, what is the central angle of the remaining sectors?
如果一个圆被分成三个扇形，其中两个扇形面积分别占了整个圆面积的35%和25%，那么剩下的扇形的圆心角为多少°．
<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (7/20) - (1/4)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">360 * (2/5)</gadget>
<output>144</output>

<result>144</result>