A bag of rice has eaten 12 kilograms, and it has just been eaten (4/5). How many kilograms are left in this bag of rice?
一袋大米吃了12千克，刚好吃了(4/5)，这袋大米还剩多少千克？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">15 - 12</gadget>
<output>3</output>

<result>3</result>