A bottle of beverage weighs (4/5) kilograms, drink 25% of it for the first time, and drink (1/4) kilograms for the second time, how many kilograms are left?
一瓶饮料重(4/5)千克，第一次喝掉它的25%，第二次喝掉(1/4)千克，还剩多少千克？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(4/5) * (1/4)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(4/5) - (1/5) - (1/4)</gadget>
<output>7/20 = around 0.35</output>

<result>7/20 = around 0.35</result>