There are four points (1/2), (1/10), 0.2, -1 on the number axis, how many of these four points are closest to the origin.
在数轴上有(1/2)、(1/10)、0.2、-1四个点，这四个点中多少离原点最接近．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>