A car drives from City A to City B, driving 48km per hour, and arrives at 12:00 noon; if driving 80km per hour. Arrive at 10 am, want to arrive at 11 am. What should be the speed?
一辆汽车从甲城开往乙城，每小时行驶48km，中午12时到达；如果每小时行驶80km．上午10时到达，要想上午11时到达．车速应该是多少？
<gadget id="calculator">80 * 10</gadget>
<output>800</output>

<gadget id="calculator">48 * 12</gadget>
<output>576</output>

<gadget id="calculator">800 - 576</gadget>
<output>224</output>

<gadget id="calculator">80 - 48</gadget>
<output>32</output>

<gadget id="calculator">224 / 32</gadget>
<output>7</output>

<gadget id="calculator">12 - 7</gadget>
<output>5</output>

<gadget id="calculator">11 - 7</gadget>
<output>4</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">48 * (5/4)</gadget>
<output>60</output>

<result>60</result>