/usr/ is in libcommons-math3-java 3.6.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/libcommons-math3-java/
/usr/share/doc/libcommons-math3-java/changelog.Debian.gz
/usr/share/doc/libcommons-math3-java/copyright
/usr/share/java/
/usr/share/java/commons-math3.jar
/usr/share/maven-repo/
/usr/share/maven-repo/org/
/usr/share/maven-repo/org/apache/
/usr/share/maven-repo/org/apache/commons/
/usr/share/maven-repo/org/apache/commons/commons-math3/
/usr/share/maven-repo/org/apache/commons/commons-math3/3.6.1/
/usr/share/maven-repo/org/apache/commons/commons-math3/3.6.1/commons-math3-3.6.1.pom
/usr/share/maven-repo/org/apache/commons/commons-math3/debian/
/usr/share/maven-repo/org/apache/commons/commons-math3/debian/commons-math3-debian.pom
/usr/share/java/commons-math3-3.6.1.jar
/usr/share/maven-repo/org/apache/commons/commons-math3/3.6.1/commons-math3-3.6.1.jar
/usr/share/maven-repo/org/apache/commons/commons-math3/debian/commons-math3-debian.jar