The original price of a commodity is 80 yuan, and the current price is 20 yuan cheaper than the original price. How much is the current price lower than the original price?

The original price of a commodity is 80 yuan, and the current price is 20 yuan cheaper than the original price. How much is the current price lower than the original price?

Current price: 80-20 = 60 yuan
The current price is lower than the original price: 80-60 = 20 yuan