File list (Check if you may need any files):
calculator
..........\.classpath
..........\.myeclipse
..........\.mymetadata
..........\.project
..........\.settings
..........\.........\org.eclipse.jdt.core.prefs
..........\src
..........\WebRoot
..........\.......\calculator.jsp
..........\.......\index.jsp
..........\.......\META-INF
..........\.......\........\MANIFEST.MF
..........\.......\result.jsp
..........\.......\WEB-INF
..........\.......\.......\classes
..........\.......\.......\lib
..........\.......\.......\web.xml