user: Question: How many legs were won when 6 legs were lost, the 180s was 0, and the 3-dart average was less than 69.72?
Columns: ['Player', 'Played', 'Sets Won', 'Sets Lost', 'Legs Won', 'Legs Lost', '100+', '140+', '180s', 'High Checkout', '3-dart Average']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Anastasia Dobromyslova', 3.0, 6.0, 0.0, 18.0, 4.0, 32.0, 16.0, 1.0, 94.0, 79.07]
SQL:

assistant: SELECT SUM("Legs Won") FROM "Table" WHERE "Legs Lost" = 6.0 AND "180s" = 0.0 AND "3-dart Average" < 69.72;