If a car travels 210 kilometers in 3 hours, how many kilometers can it travel in 5.5 hours at this speed?
一辆汽车，3小时行驶了210千米，照这样的速度，用5.5小时可以行驶多少千米．
<gadget id="calculator">210 / 3</gadget>
<output>70</output>

<gadget id="calculator">70 * 5.5</gadget>
<output>385</output>

<result>385</result>