How to use windows standard calculator! Generate bills and more! part1

[@banayyatk7505]

Very useful information

[@computertechworld4811]

Thank you very much

[@Bhaskar-Mamatha]

Thanks!

[@computertechworld4811]

Thank you very much for contributing

[@natarajv1165]

Super

[@computertechworld4811]

Thank you very much sir

[@shekappav3824]

Thanks

[@computertechworld4811]

Thank you very much for contributing

[@kavithakavitha1251]

Super tutorial thank you very much sir

[@computertechworld4811]

Thank you very much