If a car drives from A to B, if it travels 50 kilometers per hour, it will arrive at 12:00 noon the next day; if it travels 60 kilometers per hour, it will arrive at 9:00 am the next day. Now it is time to arrive at 10:00 am the next day. Ask: How many kilometers does the car travel per hour?
一辆汽车从甲地开往乙地，如果每小时行50千米，第二天中午12：00才能到达；如果每小时行60千米，第二天上午9：00就能到达．现要在第二天上午10：00到达，问：汽车每小时要行多少千米？
<gadget id="calculator">12 - 9</gadget>
<output>3</output>

<gadget id="calculator">60 - 50</gadget>
<output>10</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">60 * (3/10)</gadget>
<output>18</output>

<gadget id="calculator">18 - 2</gadget>
<output>16</output>

<gadget id="calculator">18 / 16</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">50 * (9/8)</gadget>
<output>225/4 = around 56.25</output>

<result>225/4 = around 56.25</result>