A Siberian tiger weighs 360 kilograms, four times that of an ostrich. How much lighter is an ostrich than a Siberian tiger?
一只东北虎重360千克，是一只鸵鸟的4倍，鸵鸟比东北虎轻多少千克？
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">360 / 3</gadget>
<output>120</output>

<result>120</result>