The cost of each commodity is a yuan, and the selling price is 22% higher than the cost. However, due to the overstock of inventory, it needs to be sold at 85% of the selling price How much profit can each piece make? (expressed in algebraic formula)

(122%a)×85%
=103.7% a (yuan)
103.7% A-100% a = 3.7% a (yuan)
The profit per piece is 3.7% a yuan

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