$$3\frac{1}{6}\times4\frac{2}{3}\times9\frac{2}{3}$$
$\frac{3857}{27}\approx 142.851851852$
$$\frac{18+1}{6}\times \frac{4\times 3+2}{3}\times \frac{9\times 3+2}{3}$$
$$\frac{19}{6}\times \frac{4\times 3+2}{3}\times \frac{9\times 3+2}{3}$$
$$\frac{19}{6}\times \frac{12+2}{3}\times \frac{9\times 3+2}{3}$$
$$\frac{19}{6}\times \frac{14}{3}\times \frac{9\times 3+2}{3}$$
$$\frac{19\times 14}{6\times 3}\times \frac{9\times 3+2}{3}$$
$$\frac{266}{18}\times \frac{9\times 3+2}{3}$$
$$\frac{133}{9}\times \frac{9\times 3+2}{3}$$
$$\frac{133}{9}\times \frac{27+2}{3}$$
$$\frac{133}{9}\times \frac{29}{3}$$
$$\frac{133\times 29}{9\times 3}$$
$$\frac{3857}{27}$$
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$\frac{7 \cdot 19 \cdot 29}{3 ^ {3}} = 142\frac{23}{27} = 142.85185185185185$
