A batch of aid materials was shipped to Wenchuan, 8 trucks were transported away (2/5), how many trucks will be needed to finish the rest?
有一批援助物资运往汶川，8车运走(2/5)，剩下的还要几车才能运完？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(2/5) / 8</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(3/5) / (1/20)</gadget>
<output>12</output>

<result>12</result>