An ordinary train travels at 80 kilometers per hour, and a high-speed train runs faster (1/2) than the ordinary train. How much more does the high-speed train travel per hour than the ordinary train?
一列普通列车时速80千米，一列高速列车比普通列车快(1/2)，高速列车比普通列车每小时多行多少千米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">80 * (1/2)</gadget>
<output>40</output>

<result>40</result>