The largest bird in the world is the ostrich. An ostrich egg weighs about 1.5 kilograms, which is 0.015 kilograms more than 27 times that of an egg. How many kilograms does this egg weigh?
世界上最大的鸟是鸵鸟．一个鸵鸟蛋约重1.5千克，比一个鸡蛋的27倍还重0.015千克．这个鸡蛋重多少千克？
<gadget id="calculator">0.015 * 1_000</gadget>
<output>15</output>

<gadget id="calculator">15 - 0.015</gadget>
<output>14.985</output>

<gadget id="calculator">14.985 / 27</gadget>
<output>0.555</output>

<result>0.555</result>