A football field has a length of 60 meters and a width of 45 meters. If both the length and width are increased by 10 meters, how many square meters will the area increase?
一个足球场，长是60米，宽是45米，如果长与宽都增加10米，面积增加多少平方米？
<gadget id="calculator">60 + 10</gadget>
<output>70</output>

<gadget id="calculator">45 + 10</gadget>
<output>55</output>

<gadget id="calculator">70 * 55</gadget>
<output>3_850</output>

<gadget id="calculator">60 * 45</gadget>
<output>2_700</output>

<gadget id="calculator">3_850 - 2_700</gadget>
<output>1_150</output>

<result>1_150</result>