user: Question: How many tackle assists for the player who averages 23.7?
Columns: ['Name', 'GP-GS', 'Solo', 'Ast', 'Total', 'TFL-Yds', 'No-Yds', 'BrUp', 'QBH', 'No.-Yds', 'Avg', 'TD', 'Long', 'Rcv-Yds', 'FF', 'Blkd Kick']
Types: ['text', 'text', 'real', 'real', 'real', 'text', 'text', 'real', 'real', 'text', 'text', 'real', 'real', 'text', 'real', 'real']
Sample row: ['Joe Fields', '12-12', 53.0, 44.0, 97.0, '2.5-4', '0.0-0', 2.0, 1.0, '4-62', '15.5', 0.0, 35.0, '1-0', 0.0, 0.0]
SQL:

assistant: SELECT "Ast" FROM "Table" WHERE "Avg" = '23.7';