☆☆☆☆☆☆☆☆, the number of △ is 50% of ☆, how many △ are there?
☆☆☆☆☆☆☆☆，△的个数是☆的50%，△有多少个．
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">8 * (1/2)</gadget>
<output>4</output>

<result>4</result>