A car travels 550 kilometers from place A to place B. It travels 28% of the distance in the first hour and 37% of the distance in the second hour. How much less is the distance traveled in the first hour than in the second hour? rice?
一辆汽车从甲地到乙地共550千米，第一小时行了全程的28%，第二小时行了全程的37%，第一小时走的路程比第二小时走的路程少多少千米？
<gadget id="calculator">37 / 100</gadget>
<output>37/100 = around 0.37</output>

<gadget id="calculator">28 / 100</gadget>
<output>7/25 = around 0.28</output>

<gadget id="calculator">(37/100) - (7/25)</gadget>
<output>9/100 = around 0.09</output>

<gadget id="calculator">550 * (9/100)</gadget>
<output>99/2 = around 49.5</output>

<result>99/2 = around 49.5</result>