How about 3.2 × 42.3 × 3.75-12.5 × 0.423 × 16 3.2×42.3×3.75-12.5×0.423×16

How about 3.2 × 42.3 × 3.75-12.5 × 0.423 × 16 3.2×42.3×3.75-12.5×0.423×16

The first three are equal to 507.6-84.6 = 423,