Uncle Wang raised 18 cattle, and the number of cows was three times that of the cattle. How many cows did Uncle Wang raise in total?
王大叔饲养了18头黄牛，奶牛的头数是黄牛的3倍．王大叔一共饲养了多少头牛？
<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<gadget id="calculator">54 + 18</gadget>
<output>72</output>

<result>72</result>