Xiao Ao has 8 pinballs, and Xiao Lin has 3 times as many pinballs as Xiao Ao, one less. How many pin balls does Xiao Lin have?
小奥有8个弹球，小林的弹球是小奥的3倍少1个，小林的弹球是多少个．
<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<gadget id="calculator">24 - 1</gadget>
<output>23</output>

<result>23</result>