Computes the bin for a value among the specified number of identically sized bins within the given bounds.
value (required): The value for which the bin is computed.
min (required): The lower bound. If <value> is less than <min>, the bin will be 0.
max (required): If <value> is greater that max, the bin will be <bins> +1.
bins (required): The number of bins within the interval <min>, <max>.
BinFixed([Days Since Signup], 0, 100, 10)