The urban construction of Changsha is changing with each passing day. In 1949, the urban area of Changsha City was only 6.75 square kilometers. After more than 50 years of development, the urban area has expanded to 28 times the original area. How big is the urban area of Changsha City now?
长沙市城市建设日新月异．1949年时，长沙市城区面积只有6.75平方千米，经过五十多年的发展，城区面积已经扩大到原来的28倍，现在的长沙市城区面积有多大？
<gadget id="calculator">6.75 * 28</gadget>
<output>189</output>

<result>189</result>