Teacher Wang bought 12 table tennis balls with 90 yuan, 2 yuan each, and the remaining money just bought a pair of table tennis bats. How much is a pair of table tennis rackets?
王老师带90元买了12个乒乓球，每个乒乓球2元，剩下的钱正好买了一副乒乓球拍．一副乒乓球拍多少元？
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">90 - 24</gadget>
<output>66</output>

<result>66</result>