There is 96.3 yuan of telephone charges stored in Xiaoming's mobile phone card, and after 40 minutes of calling, there is still 89.1 yuan of calls remaining. How many minutes of calls can I make with the remaining money?
小明的手机卡中存有96.3元电话话费，打了40分钟后还剩89.1元话费，剩下的钱还可以打多少分钟电话？
<gadget id="calculator">96.3 - 89.1</gadget>
<output>7.2</output>

<gadget id="calculator">7.2 / 40</gadget>
<output>0.18</output>

<gadget id="calculator">89.1 / 0.18</gadget>
<output>495</output>

<result>495</result>