Improve audio sound quality on 35 min video recording

Job ID: 35121782

Budget: £20 – £250 GBP

I have an audio/video that has poor quality sound as the microphone was not good. I would need this to be fixed and improved ideally filtering out the static around the audio sequence introduced by the microphone.

Here is an example file:

https://www.dropbox.com/s/yjzofbmv6ipydpj/Sample.mp4?dl=0