A car saves a total of 25 kilograms of fuel in 5 days. According to this calculation, how many kilograms of gasoline can be saved in a week?
一辆汽车5天共节约油25千克，照这样计算，一周可节约汽油多少千克？
<gadget id="calculator">25 / 5</gadget>
<output>5</output>

<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<result>35</result>