There are 5 tons of coal in a pile, (1/5) tons are burned on the first day, and the rest (1/5) is burned on the second day, how many tons are left?
一堆煤有5吨，第一天烧了(1/5)吨，第二天烧了余下的(1/5)，还剩下多少吨？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5 - (1/5)</gadget>
<output>24/5 = around 4.8</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(24/5) * (4/5)</gadget>
<output>96/25 = around 3.84</output>

<result>96/25 = around 3.84</result>