65,438+030 yuan is the price of shoes, and 45×2+ the customer's 40 yuan.

Pay attention to the relationship between Miss Wang and her neighbor, because the neighbor gave Miss Wang 100 yuan, and Miss Wang also gave her neighbor 100 yuan.

Note that the customer took the money paid by Miss Wang. The customer took the shoes worth 45×2=90 yuan and the 40 yuan that Miss Wang gave him.