If you toss a coin 100 times, how many times will it come up heads?
扔硬币时，若扔100次，大约有多少次正面朝上．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">100 * (1/2)</gadget>
<output>50</output>

<result>50</result>