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I was very interested in what he said.
One Taiwan dollar is about 2.5 yen now.
It means that 100 Taiwan dollars are 250 yen in the exchange market.
But he said that 100 Taiwan dollars were worth 1,000 yen when living in Taiwan.
If we order 200-Taiwan-dollar-food in a restaurant, it is not 500 yen but 2,000 yen for Taiwanese.