There are 9 basketballs and 8 times as many footballs as there are basketballs. How many basketballs and footballs are there?
有篮球9个，足球的个数是篮球的8倍，篮球和足球共有多少个？
<gadget id="calculator">9 * 8</gadget>
<output>72</output>

<gadget id="calculator">72 + 9</gadget>
<output>81</output>

<result>81</result>