A bag of rice is 48 kilograms, eat (3/8) first, and then use the rest (3/5), how many kilograms are left.
一袋大米48千克，先吃了(3/8)，又用去剩下的(3/5)，还剩下多少千克．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">48 * (3/8)</gadget>
<output>18</output>

<gadget id="calculator">48 - 18</gadget>
<output>30</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 * (2/5)</gadget>
<output>12</output>

<result>12</result>