Xiaohong's family bought a bag of rice and ate it (5/9), leaving 15 kilograms. How many kilograms of rice did you buy? (two methods)
小红家买来一袋大米，吃了(5/9)，还剩15千克．买来大米多少千克？(两种方法)
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 - (5/9)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">15 / (4/9)</gadget>
<output>135/4 = around 33.75</output>

<result>135/4 = around 33.75</result>