The total length of the Luning Expressway is about 270 kilometers. A car travels from Shanghai to Nanjing at a speed of 80 kilometers per hour. It has already been driving for 1.5 hours. How many hours will it take to reach Nanjing?
泸宁高速公路全长约270千米，一辆轿车以80千米/时的速度从上海开往南京，已经行驶了1.5小时，还需要多少小时才能到南京？
<gadget id="calculator">80 * 1.5</gadget>
<output>120</output>

<gadget id="calculator">270 - 120</gadget>
<output>150</output>

<gadget id="calculator">150 / 80</gadget>
<output>15/8 = around 1.875</output>

<result>15/8 = around 1.875</result>