A rectangular vegetable field is 90 meters long and 10 meters wide. If the field is divided into 4 parts and one part is planted with eggplants, how many square meters does the eggplant field occupy?
一块长方形菜地长90米，宽10米，如果把这块地平均分成4份，其中一份种茄子，茄子地占多少平方米？
<gadget id="calculator">10 / 4</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">90 * (5/2)</gadget>
<output>225</output>

<result>225</result>