The school teaching building covers an area of 660 square meters, which is about (3/40) of the total area of the campus. The playground area accounts for (1/4) of the total campus area. How many square meters is the school playground?
学校教学大楼占地面积为660平方米，约是校园总面积的(3/40)．操场面积占校园总面积的(1/4)．学校操场面积是多少平方米？
<gadget id="calculator">3 / 40</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">660 / (3/40)</gadget>
<output>8_800</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">8_800 * (1/4)</gadget>
<output>2_200</output>

<result>2_200</result>