Fill in the Blank

A manufacturing estimator is calculating a material scaling factor using the expression (327)(427)(3 - 2\sqrt{7})(4 - 2\sqrt{7}). When applying the FOIL method, the estimator must recall that multiplying the "Last" terms from each binomial yields (27)(27)(-2\sqrt{7})(-2\sqrt{7}). This intermediate product simplifies to the integer ____.

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Updated 2026-06-03

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