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I found one excercise - convert a rational number 63/64(base - 10) to a number system with a base of 4 using Radix conversion.

Searching throught the internet i found this formula (i hope it`s the correct one :) ) -

http://img255.imageshack.us/img255/903/races3.jpg [Broken]

Unlike integer type conversion formula, this is a little unclear. As i understand - the "C" is the number that i want to convert and "r" is the new base, but how many steps do i need to perfom (in the formula i = -1,-2,-3,-4....-n )? And how exactly do i sum these coefficients C?

Thanks in advance.

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# Converting rational number to a new base.

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