A sparrow weighs 81 grams, exactly 40 times that of a hummingbird. How many grams does a hummingbird weigh?
一只麻雀的体重是81克，恰好是蜂鸟的40倍．一只蜂鸟重多少克？
<gadget id="calculator">81 / 40</gadget>
<output>81/40 = around 2.025</output>

<result>81/40 = around 2.025</result>