Xiaogang’s family bought a bag of flour and ate 18 kilograms, which is exactly 75% of this bag of flour. How many kilograms of flour are left in this bag?
小刚家买来一袋面粉，吃了18千克，正好是这袋面粉的75%，这袋面粉还剩多少千克？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">18 / (3/4)</gadget>
<output>24</output>

<gadget id="calculator">24 - 18</gadget>
<output>6</output>

<result>6</result>