Watch "The new, larger version of the Internet: IPv$6,"$ by Vint Cerf. Dr$.$ Cerf helped invent the Internet with his colleague, Robert Kahn. In the video, Dr$.$ Cerf mentions "mobiles." He is referring to mobile $($or cellular$)$ phones.

The new, larger version of the Internet: IPv$6$ Links to an external site.

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The larger address space of IPv$6$ was aimed at traditional Internet$-$connected devices. Estimate the total number of household electric appliances in the U$.$S$.$ that might also be Internet$-$connected for the Smart Grid $($e$.$g$.,$ smart hot water heaters and smart toasters$).$ Show your detailed assumptions and your calculations.