A chicken weighs 2050 grams, which is 650 grams heavier than a duck. A goose weighs 2450 grams more than the duck. How much does the goose weigh in kilograms?
一只鸡重2050克，比一只鸭重650克，一只鹅比这只鸭重2450克，这只鹅重多少千克？
<gadget id="calculator">2_050 - 650</gadget>
<output>1_400</output>

<gadget id="calculator">1_400 + 2_450</gadget>
<output>3_850</output>

<gadget id="calculator">3_850 / 1_000</gadget>
<output>77/20 = around 3.85</output>

<result>77/20 = around 3.85</result>