A highway is 336 kilometers long, a passenger car can travel the entire distance in 3.2 hours, and a truck can complete the journey in 3.5 hours. How many kilometers per hour is the passenger car faster than the truck?
一条公路长336千米，一辆客车3.2小时行完全程，一辆货车3.5小时行完全程．客车每小时比货车快多少千米？
<gadget id="calculator">336 / 3.2</gadget>
<output>105</output>

<gadget id="calculator">336 / 3.5</gadget>
<output>96</output>

<gadget id="calculator">105 - 96</gadget>
<output>9</output>

<result>9</result>