1. A multiplier processing system for performing a group-multiply-and-sum instruction, said system comprising: means for partitioning each of a plurality of operands into a plurality of symbols, said operands and each of said symbols having a predefined bit width; means for multiplying symbols of a first operand with symbols of a second operand, each of such multiplications producing a product; and means for adding each product so as to produce a single scalar result, said scalar result capable of being represented by a bit width which is equal to or less than said predefined bit width of said operands without a reduction in the accuracy of said result.