In the second half of last year, Zhang Hua's family paid a total of 624 yuan for telephone and Internet access, of which the monthly Internet access fee was 40 yuan. Calculate, how much is his family's average monthly telephone bill?
张华家去年下半年共缴纳电话费和上网费624元，其中每月的上网费是40元，算一算，他家平均每月的电话费时多少元？
<gadget id="calculator">40 * 6</gadget>
<output>240</output>

<gadget id="calculator">624 - 240</gadget>
<output>384</output>

<gadget id="calculator">384 / 6</gadget>
<output>64</output>

<result>64</result>