A vegetable field has an area of 1000 square meters, of which (2/5) is planted with tomatoes, and the rest is planted with eggplants and cucumbers at an area ratio of 5:7. How many square meters are cucumbers more varied than eggplants?
一块菜地有1000平方米，其中的(2/5)种西红柿，剩下的按5：7的面积比种茄子和黄瓜．黄瓜比茄子多种多少平方米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1_000 * (3/5)</gadget>
<output>600</output>

<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">600 * (7/12)</gadget>
<output>350</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">600 * (5/12)</gadget>
<output>250</output>

<gadget id="calculator">350 - 250</gadget>
<output>100</output>

<result>100</result>