The total length from Yulin Bus Station to Nanning Langdong Railway Station is 230 kilometers. A truck travels from Yulin at a speed of 60 kilometers per hour for 1.5 hours, and then travels at a speed of 70 kilometers for the remaining distance. How many hours will it take to arrive? Nanning Langdong Railway Station?
玉林汽车站到南宁琅东站全长230千米，一辆货车从玉林以每小时60千米的速度先行了1.5小时，再以70千米的速度行余下的路程，还需多少小时才能到达南宁琅东站？
<gadget id="calculator">60 * 1.5</gadget>
<output>90</output>

<gadget id="calculator">230 - 90</gadget>
<output>140</output>

<gadget id="calculator">140 / 70</gadget>
<output>2</output>

<result>2</result>