Teacher Liu has 9 boxes of table tennis balls, 12 in each box, and lent 16 to his classmates. How many are left now?
刘老师有9盒乒乓球，每盒装12个，借给同学们16个，现在还剩多少个．
<gadget id="calculator">12 * 9</gadget>
<output>108</output>

<gadget id="calculator">108 - 16</gadget>
<output>92</output>

<result>92</result>