A pile of sand has 1 ton, use (5/8), how many tons are used.
一堆沙子有1吨，用去(5/8)，用去多少吨吨．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 * (5/8)</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>