Longlong buys a pineapple for 4 yuan, and can buy 1 kilogram of bananas with the money of buying a pineapple. You can buy 4 pears for the price of 1 kilogram of bananas. How much is each pear?
龙龙用4元买一个菠萝，用买一个菠萝的钱可以买1千克香蕉．买1千克香蕉的钱可以买4个梨．每个梨多少元？
<result>4</result>