Teacher Wu has a total of 325 yuan in his wallet, 145 yuan was spent on the swivel chair, and the remaining money was used to buy 2 basketballs of the same model. How much is each basketball?
吴老师的钱包里共有325元，买转椅用去了145元，用剩下的钱买了2个相同型号的篮球，每个篮球多少元？
<gadget id="calculator">325 - 145</gadget>
<output>180</output>

<gadget id="calculator">180 / 2</gadget>
<output>90</output>

<result>90</result>