(3/5) of a bag of rice is eaten, which is exactly 15 kilograms. How many kilograms does this bag of rice have?
一袋大米吃了它的(3/5)，正好是15千克，这袋大米原有多少千克．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">15 / (3/5)</gadget>
<output>25</output>

<result>25</result>