A penguin weighs 36 kg, and an ostrich weighs 15 kg less than three times that of a penguin. How many kilograms does this ostrich weigh?
一只企鹅重36千克，一只鸵鸟的体重比企鹅的3倍少15千克．这只鸵鸟的体重是多少千克？
<gadget id="calculator">36 * 3</gadget>
<output>108</output>

<gadget id="calculator">108 - 15</gadget>
<output>93</output>

<result>93</result>