Xiaogang’s family bought a bag of flour and ate 15 kilograms, which happened to be (3/5) of this bag of flour. How many kilograms of flour are left in this bag?
小刚家买来了一袋面粉，吃了15千克，正好是这袋面粉的(3/5)，这袋面粉还剩多少千克？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">25 - 15</gadget>
<output>10</output>

<result>10</result>