Li Ning's father bought a box of peanut oil, which contained 6 bottles. It is known that each bottle of peanut oil is 4 liters. How many liters of peanut oil are in this box?
李宁的爸爸买了一箱花生油，内有6瓶，已知每瓶花生油4升，这箱花生油一共多少升？
<gadget id="calculator">4 * 6</gadget>
<output>24</output>

<result>24</result>