barrel of oil is planned to be used for 12 days, and 8 liters are used per day. Now the daily consumption is 25% lower than the original plan. How many days can this barrel of oil be used for?
一桶油计划用12天，每天用8升，现在每天使用量比原计划节约25%，这桶油可用多少天？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/12) * (3/4)</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">1 / (1/16)</gadget>
<output>16</output>

<result>16</result>