A passenger car travels 50 kilometers per hour, and a truck travels 55 kilometers per hour. The two cars drive from two places at the same time. When they meet, the truck travels 7.5 kilometers longer than the passenger car. How many kilometers are the distance between the two places?
一辆客车每小时行50千米，一辆货车每小时行55千米，两车同时从两地相对开出，相遇时货车比客车多走了7.5千米，两地相距多少千米？
<gadget id="calculator">50 + 55</gadget>
<output>105</output>

<gadget id="calculator">55 - 50</gadget>
<output>5</output>

<gadget id="calculator">7.5 / 5</gadget>
<output>1.5</output>

<gadget id="calculator">105 * 1.5</gadget>
<output>157.5</output>

<result>157.5</result>