- A chicken weighs 1.8 kg, which is 1.1 kg lighter than a duck. How much does a duck weigh?
-只鸡重1.8千克，比一只鸭轻1.1千克，一只鸭重多少千克？
<gadget id="calculator">1.8 + 1.1</gadget>
<output>2.9</output>

<result>2.9</result>