Explain why Jeremy Bentham's Hedonic Calculus seeks to determine a moral cause of action

The moral framework within which the Hedonic Calculus operates is Act Utilitarianism, which establishes the greatest good for the greatest number of people as the proper goal of a moral framework, arguing the observation that all living creatures seek pleasure and avoid pain as the justification for holding pleasure as moral good. The calculus as such seeks to establish the impact of a given action with calculations of the following seven tenets:How long the pleasure would last, its duration, how intense it would be, the locality of the pleasure, its propinquity (or proximity), the extent of the pleasure, how many people it will effect, its certainty or probability, the degree to which the pleasure is imbibed with pain, its purity, and its fecundity, I.E whether and to what degree it will give rise to additional pleasure. The calculus serves as a component tool in then establishing what, within his normative ethical theory, Bentham would term a moral or immoral action, moral if it creates more pleasure than pain for the greatest number of people, and immoral if the adverse.