$$4 \times 2=21,5 \times 4=27,3 \times 8=$$
$\text{false}$
$$8=21,5\times 4\text{ and }21,5\times 4=27,3\times 8$$
$$8=86\text{ and }21,5\times 4=27,3\times 8$$
$$\text{false}\text{ and }21,5\times 4=27,3\times 8$$
$$\text{false}\text{ and }86=27,3\times 8$$
$$\text{false}\text{ and }86=218,4$$
$$\text{false}\text{ and }\text{false}$$
$$\text{false}$$
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