Doctor Duties & Responsibilities

could you please correct

1- Doctors have a great responsibilities in all societies .For example, they carry out many surgeries and also provide several vaccines to fight the diseases.

2- To clarify, inventors usually work on makes people's lives easier. For instance ,they spend their lives on researches in order to invent a new technologies that we need nowadays, such as medical equipment and technical devices.

Here are my suggested corrections for your sentence presentations. I hope these work for you. I am not sure what these corrections will be used for or how it will be used in a presentation so I am just giving a simple correction of the grammar errors.

1 - Doctors carry great responsibilities in societies. For example, they carry out multiple surgeries and inoculate people against diseases through vaccine injections.
2 - For clarification, inventors create instruments or gadgets to make people's live easier. They spend their lives researching and inventing new technologies which we use these days. Examples of these inventions can be seen in medical equipment and technical devices.

@Holt
thank you