The average fuel consumption of a car is 4,000 milliliters per hour, and a barrel of gasoline is 100 liters. After 4 liters are used, how long can the remaining gasoline be used?
汽车平均每小时耗油4000毫升，一桶汽油100升，用去4升后，剩下汽油还能用多久？
<gadget id="calculator">4_000 / 1_000</gadget>
<output>4</output>

<gadget id="calculator">100 - 4</gadget>
<output>96</output>

<gadget id="calculator">96 / 4</gadget>
<output>24</output>

<result>24</result>