Divide the denominator (bottom number) into the numerator (top number). A fraction is a division. Here's an example. 12/4 becomes 12 Ã· 4 = 3. To visualize this, think of a â¦ pizza. Say it's one of those personal pizzas and you slice the pizza into four equal slices (fourths, quarters, or 1/4 the original whole pizza).
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From http://msdn.microsoft.com/en-us/library/xfhwa508.aspx : A Dictionary can support multiple readers concurrently, as long as the collection is not modified. Even so, enumerating through a collection is intrinsically not a thread-safe procedure. In the rare case where an enumeration contends with write accesses, the collection must be locked during the entire enumeration.