A square land with a side length of 28 meters, draw out a rectangle with a length of 28 meters and a width of 12 meters to plant tomatoes, and the rest to grow cabbage. How many square meters is cabbage planted?
一块正方形地，边长28米，划出长28米、宽12米的长方形地种西红柿，其余的种白菜．种白菜多少平方米？
<gadget id="calculator">28 - 12</gadget>
<output>16</output>

<gadget id="calculator">28 * 16</gadget>
<output>448</output>

<result>448</result>