What year was the team Club of atl tico de san juan fc who plays at hiram bithorn stadium founded.
CREATE TABLE table_48357 (
    "Club" text,
    "Home city" text,
    "Stadium" text,
    "Founded" real,
    "Seasons in PRSL" text
)
SELECT SUM("Founded") FROM table_48357 WHERE "Stadium" = 'hiram bithorn stadium' AND "Club" = 'atlético de san juan fc'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What year was the team Club of atl tico de san juan fc who plays at hiram bithorn stadium founded. ### Input: CREATE TABLE table_48357 (
    "Club" text,
    "Home city" text,
    "Stadium" text,
    "Founded" real,
    "Seasons in PRSL" text
) ### Response: SELECT SUM("Founded") FROM table_48357 WHERE "Stadium" = 'hiram bithorn stadium' AND "Club" = 'atlético de san juan fc'