Amazon's vice president of Kindle, Peter Larsen, displays the Amazon Fire TV, a new device that allows users to stream video, music, photos, games and more through their television, on April 2, 2014 in New York City. 
Amazon's vice president of Kindle, Peter Larsen, displays the Amazon Fire TV, a new device that allows users to stream video, music, photos, games and more through their television, on April 2, 2014 in New York City.  - 
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Marketplace

In this week's edition of Silicon Tally, the numbers we're discussing involve set-top boxes, billions in loose change and just how many of us actually wear wearables. Will Oremus, tech blogger for Slate, runs the following numbers:

$70 billion

The amount Americans spent on gift cards last year. (Marketplace)

1/3

The percentage of wearable computer consumers that end up abandoning their devices after six months of their purchase. (Guardian)

$99

The price of Amazon's new set-top box, the Fire TV. (USA Today)

$650,000

The amount of non-work related expenses claimed in 2013 by Facebook CEO Mark Zuckerberg for travel on the company's private jet. (Business Insider)

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Follow Ben Johnson at @@TheBrockJohnson