Dongdong's weight is 48 kg, his cousin's weight is half of his, and his grandfather's weight is three times that of his cousin. How many kilograms does grandpa weigh?
冬冬体重48千克，表弟体重是他的一半，而爷爷体重是表弟的3倍．爷爷体重是多少千克？
<gadget id="calculator">48 / 2</gadget>
<output>24</output>

<gadget id="calculator">24 * 3</gadget>
<output>72</output>

<result>72</result>