A rectangular vegetable field is 80 meters long. The width is 53 meters, of which 1280 square meters are used to grow radishes, and the rest are used to grow vegetables. How many square meters is the land for growing vegetables?
一块长方形的菜地，长80米．宽53米，其中1280平方米用来种萝卜，其余的用来种青菜，种青菜的地的面积是多少平方米？
<gadget id="calculator">80 * 53</gadget>
<output>4_240</output>

<gadget id="calculator">4_240 - 1_280</gadget>
<output>2_960</output>

<result>2_960</result>