What is the total of the River Mile in Greenup, Kentucky?
CREATE TABLE table_63445 (
    "Locks & Dam" text,
    "Location [L ]" text,
    "River Mile" real,
    "Lock Side" text,
    "Lock Lift/Drop (in feet)" text,
    "Pool Length (miles)" text
)
SELECT SUM("River Mile") FROM table_63445 WHERE "Location [L ]" = 'greenup, kentucky'
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 is the total of the River Mile in Greenup, Kentucky? ### Input: CREATE TABLE table_63445 (
    "Locks & Dam" text,
    "Location [L ]" text,
    "River Mile" real,
    "Lock Side" text,
    "Lock Lift/Drop (in feet)" text,
    "Pool Length (miles)" text
) ### Response: SELECT SUM("River Mile") FROM table_63445 WHERE "Location [L ]" = 'greenup, kentucky'