The school pool is 20 meters long and 8 meters wide. Now it is going to be expanded. The length will be increased by 5 meters and the width will be increased by 3 meters. How much more will the area after the expansion be than the original?
学校水池长20米，宽8米，现在要进行扩建，长度增加5米，宽增加3米，那扩建后的面积比原来多多少？
<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<gadget id="calculator">8 + 3</gadget>
<output>11</output>

<gadget id="calculator">25 * 11</gadget>
<output>275</output>

<gadget id="calculator">20 * 8</gadget>
<output>160</output>

<gadget id="calculator">275 - 160</gadget>
<output>115</output>

<result>115</result>