There are 9 boxes of apples in the supermarket, and 3 boxes of 12 kilograms are sold, just accounting for all (3/8). How many kilograms of apples are there in the supermarket?
超市里有9箱苹果，卖出3箱又12千克，刚好占全部的(3/8)，超市里原有多少千克苹果．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(1/9) * 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(3/8) - (1/3)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">12 / (1/24)</gadget>
<output>288</output>

<result>288</result>