The store transferred 65 computers, which have been sold (1/5). How much of the computer is left without selling it?
商店调进65台电脑，已经出售(1/5)．没出售电脑还剩几分之几？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>