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In multiplication, to get a non-zero product, all factors must be greater than 0. If one factor is 0, nothing else matters. \[\begin{align} 5 \times 2 \times 229 \times 0.2 &= 458.0\\ 5 \times 2 \times 229 \times 0.0 &= 0.0 \end{align}\] This xz/liblzma incident and the public post-morten discussion is a great illus...