Opencart. Minor improvements

you Must do the following:
1. on the website
– replace all on div p
will remove all tags from all descriptions of the products, except p, ul, ol, li.
– tags p, ul, ol, li to remove all the attributes.
the script is disposable, i.e. it is not necessary to do the module

Direct payment upon execution of the individual steps

in your response be SURE to include the cost of development and time!