In a piece of land, (2/9) of the total area is plowed in the morning and (1/3) of the total area is plowed in the afternoon. 30 hectares less in the morning than in the afternoon, how many hectares are there in total?
一块地，上午耕了总面积的(2/9)，下午耕了总面积的(1/3)．上午比下午少耕30公顷，这块地一共有多少公顷？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(1/3) - (2/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">30 / (1/9)</gadget>
<output>270</output>

<result>270</result>