Anyone know of a Silverlight / Windows Phone 7 control that displays fractions?

I'm looking for a Silverlight / Windows Phone 7 control that displays fractions. Not something that gives "3/4" but something "prettier". Like below.

Thanks PS. I'm looking to have each number added with a KeyDown event. Similar to the way a calculator would work. So I would need a "dynamic" type of placement of the numbers as opposed to placing them at specifi开发者_如何学Cc coordinates.

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I think it'd be fairly simple to create your own with the power of WPF. Here are a couple examples

Hope it helps!

Edit:

There's a WPF version of the NumericUpDown control in Kevin Moore's Bag-O-Tricks project. I think you may be able to get it to do what you're asking.

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I couldn't find exactly what I was looking for so I went with using 2 different font sizes to distinguish the whole number from the fraction. I got my idea from the following link.

http://www.xtremevbtalk.com/archive/index.php/t-320316.html