The speed ratio of the two cars is 7:4, and the two cars drive toward each other from two places at the same time until they meet. The fast train travels 48 kilometers longer than the slow train, so how many kilometers are the distance between the two places?
两车的速度比是7：4，两车从两地同时相向而行直到相遇．快出比慢车多行了48千米，那么两地相距多少千米？
<gadget id="calculator">7 + 4</gadget>
<output>11</output>

<gadget id="calculator">7 / 11</gadget>
<output>7/11 = around 0.636364</output>

<gadget id="calculator">4 / 11</gadget>
<output>4/11 = around 0.363636</output>

<gadget id="calculator">(7/11) - (4/11)</gadget>
<output>3/11 = around 0.272727</output>

<gadget id="calculator">48 / (3/11)</gadget>
<output>176</output>

<result>176</result>