SELECT "Not Out" FROM table_2246 WHERE "Average" = '43.70'
How many no outs are there for an average of 43.70?
CREATE TABLE table_2246 (
    "Rank" real,
    "Runs" real,
    "Player" text,
    "Matches" real,
    "Innings" real,
    "Not Out" real,
    "Average" text
)