The planting area of rape in Lizhuang this year is 28 hectares, an increase of (1/6) compared with last year. How many hectares of rapeseed was planted last year?
李庄今年油菜的种植面积是28公顷，比去年增加(1/6)．去年油菜的种植面积是多少公顷？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 + (1/6)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">28 / (7/6)</gadget>
<output>24</output>

<result>24</result>