An energy-saving car travels 225km and saves 5L of gasoline. According to this calculation, how many liters of gasoline can be saved when this energy-saving car travels 720km?
一辆节能汽车行驶225km节约汽油5L．照这样计算，这辆节能汽车行驶720km，可节约汽油多少升？
<gadget id="calculator">225 / 5</gadget>
<output>45</output>

<gadget id="calculator">720 / 45</gadget>
<output>16</output>

<result>16</result>