Heng Heng covered his desktop with 100 stickers. The area of a sticker of Sasha is only half of that of Hengheng's, and the area of her desktop is twice that of Hengheng's. So how many sheets of stickers does Sasha have to use at least to cover her desktop.
亨亨用100张贴纸把他的桌面贴满．莎莎的一张贴纸面积只有亨亨的一张贴纸面积的一半，而她的桌面面积则为亨亨的桌面面积的2倍．那么莎莎最少要用她的贴纸多少张才能把她的桌面贴满．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / (1/2)</gadget>
<output>4</output>

<gadget id="calculator">1 * 100 * 4</gadget>
<output>400</output>

<result>400</result>