A piece of rectangular paper with a length of 28 cm and a width of 16 cm. First cut out the largest square, and then cut out the largest square from the remaining rectangular paper. What is the remaining area in square centimeters? ?
一张长方形的纸，长是28厘米、宽是16厘米，先剪下一个最大的正方形，然后从剩下的长方形纸中再剪下一个最大的正方形，这时剩下的面积是多少平方厘米？
<gadget id="calculator">28 * 16</gadget>
<output>448</output>

<gadget id="calculator">16 * 16</gadget>
<output>256</output>

<gadget id="calculator">28 - 16</gadget>
<output>12</output>

<gadget id="calculator">12 * 12</gadget>
<output>144</output>

<gadget id="calculator">448 - 256 - 144</gadget>
<output>48</output>

<result>48</result>