If a car travels 150 kilometers in 2 hours, how many kilometers can it travel in 6 hours?
一辆汽车2小时行150千米，照这样行驶，6小时可行多少千米．
<gadget id="calculator">150 / 2</gadget>
<output>75</output>

<gadget id="calculator">75 * 6</gadget>
<output>450</output>

<result>450</result>