Dad drove Xiaojun out for a trip. There was still 32 kilograms of gasoline in the fuel tank. The fuel consumption of this car was about 0.4 kilograms per kilometer. The tourist spot they went to traveled 120 kilometers. Arriving at a tourist spot?
爸爸开车带小俊出门旅游，油箱里原来还有32千克汽油，这辆车的耗油量约是每千米0.4千克，他们去的旅游点要行120千米，至少还需要加多少汽油才能到达旅游点？
<gadget id="calculator">120 * 0.4</gadget>
<output>48</output>

<gadget id="calculator">48 - 32</gadget>
<output>16</output>

<result>16</result>