you need 12 oz butter:
1 tbsp = 3 tsp
1 tbsp = 1/12 (\frac12 i guess?) oz butter
multipply 1/12 equation by 144 to get 12 oz butter so
144 tbsp = 12 oz butter
multiply 144 by 3 bc 1 tbsp = 3 tsp so
144 tbsp = 432 tsp
teaspoon = tsp
tablespoon= tbsp
oz = ounce