Does the subject want to ask, "A 40-square-meter publicity column in Ping 'an Community, with an average of 0.56 kg of paint per square meter, if 2.5 yuan is painted per kg, how much will it cost? "? 56 yuan. According to mathematical multiplication, 40X0.56X2.5= 100X0.56=56, so how much is * * * worth, 56 yuan? Multiplication refers to a shortcut to add the same numbers, and its operation result is called product, and "X" is the symbol of multiplication.