A bag of rice weighs 85 kilograms. After taking out (1/5), how many kilograms are left?
一袋大米重85千克，取出(1/5)后，还剩多少千克？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">85 * (4/5)</gadget>
<output>68</output>

<result>68</result>