There are 12 boxes of strawberries, and 5 kilograms are removed from each box, and the rest is only enough to pack 8 boxes of the same weight as the original. How many kilograms does each box of strawberries weigh?
有12箱草莓，每箱取走5千克，剩下的只够装成与原来同样重的8箱．原来每箱草莓重多少千克．
<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">12 * (5/4)</gadget>
<output>15</output>

<result>15</result>