Which of the app is the best selling app and what is the sentiments polarity of it?
best selling app = MAX(MULTIPLY(Price, Installs));
SELECT T1.App, T2.Sentiment_Polarity FROM playstore AS T1 INNER JOIN user_reviews AS T2 ON T1.App = T2.App ORDER BY T1.Price * CAST(REPLACE(REPLACE(Installs, ',', ''), '+', '') AS INTEGER) DESC LIMIT 1
CREATE TABLE IF NOT EXISTS "playstore"
(
    App              TEXT,
    Category         TEXT,
    Rating           REAL,
    Reviews          INTEGER,
    Size             TEXT,
    Installs         TEXT,
    Type             TEXT,
    Price            TEXT,
    "Content Rating" TEXT,
    Genres           TEXT
);
CREATE TABLE IF NOT EXISTS "user_reviews"
(
    App                    TEXT
        references "playstore" (App),
    Translated_Review      TEXT,
    Sentiment              TEXT,
    Sentiment_Polarity     TEXT,
    Sentiment_Subjectivity TEXT
);
