(1/4) of a bucket of water is exactly 15 kilograms, how many kilograms is this bucket of water?
一桶水的(1/4)正好是15千克，这桶水是多少千克．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">15 / (1/4)</gadget>
<output>60</output>

<result>60</result>