train travels from Shanghai to Nanjing at a speed of 120.5 kilometers per hour. After 2.4 hours, there is still 15.8 kilometers left. How many kilometers is the distance from Shanghai to Nanjing?
一列火车以每小时120.5千米的速度从上海开往南京，行驶2.4小时后还剩下15.8千米．上海到南京相距多少千米？
<gadget id="calculator">120.5 * 2.4</gadget>
<output>289.2</output>

<gadget id="calculator">289.2 + 15.8</gadget>
<output>305</output>

<result>305</result>