How many departments does RT Mart Supermarket have?

Grocery department: daily class, drinking class, lunch break class, chores class and cleaning class.

Department stores: culture, leisure, daily use and electric bicycles.

Electrical appliances: audio-visual, 3C, large electrical appliances and small household appliances.

Textile Department: home textiles, shoes and clothing.

Fresh department: fruits and vegetables, aquatic products, meat, cooked food, baking and leisure bar.