The road from Luxi to Maitreya is 42 kilometers long. A car drove from Luxi to Maitreya (5/7), how many kilometers away from Maitreya?
从泸西到弥勒的公路长42千米．一辆汽车从泸西开往弥勒，行驶了(5/7)，离弥勒还有多少千米？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 - (5/7)</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">42 * (2/7)</gadget>
<output>12</output>

<result>12</result>