A pile of yellow sand is 4 tons, used every day (1/10), how much is used in 5 days
一堆黄沙4吨，每天用去(1/10)，5天一共用去多少
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 5</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>