A bag of rice, eating (3/4) of it, is exactly 15 kilograms. How many kilograms does this bag of rice originally weigh?
一袋大米，吃了它的(3/4)，正好是15千克，这袋大米原来有多少千克．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">15 / (3/4)</gadget>
<output>20</output>

<result>20</result>