A car travels 210 km in 3 hours. According to this calculation, how many hours can this car drive from place A to place B, which is 350 kilometers away? (Answer with proportional knowledge)
一辆汽车3小时行驶210千米．照这样计算，这辆汽车从甲地开往相距350千米的乙地，几小时可以到达？(用比例知识解答)
<gadget id="calculator">210 / 3</gadget>
<output>70</output>

<gadget id="calculator">350 / 70</gadget>
<output>5</output>

<result>5</result>