100644 blob 8d1725b4d8be6cf350aaa310792e838ccd0fc0b3	Calculator.java
100644 blob 4a1993d1bf8ca59ddfd157c147556fe3b02d185f	TextProvider.java
040000 tree 34417e85fb1b9acfcc8d7edcd65217e30e419b1a	operations
040000 tree 77a1a9e7a6c826682ecd6c01afd88e77eb5fe7d2	ui