A passenger car (1/2) traveled 26 kilometers in an hour, and a truck (5/3) traveled 75 kilometers in an hour. How many kilometers per hour is the passenger car faster than the train?
一列客车(1/2)小时行了26干米，一列货车(5/3)小时行了75千米．客车比火车平均每小时快多少千米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">26 / (1/2)</gadget>
<output>52</output>

<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">75 / (5/3)</gadget>
<output>45</output>

<gadget id="calculator">52 - 45</gadget>
<output>7</output>

<result>7</result>