Find the exchange rate between the dollar and the British pounds for the following cases. 
Definitions:
Abraham Polonsky
An American screenwriter and director known for his work in film noir, as well as being blacklisted during the Hollywood blacklist era.
Blacklisted
The practice of denying employment to individuals, typically in the entertainment industry, based on their political beliefs or associations, especially during the McCarthy era in the US.
Film Noir
A genre of cinema characterized by its pessimistic outlook, moral ambiguity, and visual style that emphasizes chiaroscuro lighting and stark contrasts.
Leftist/Socialist Subtext
Themes or messages within a work that promote leftist or socialist ideologies, emphasizing social equality and communal resources.
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