/usr/lib/x86_64-linux-gnu/libf2c_i2.so.2 is in libf2c2 20130926-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libf2c_i2.so.2.1
/usr/lib/x86_64-linux-gnu/libf2c_i2.so.2.1