$$\frac{90}{60}\times\frac{128}{164}\times\frac{320}{324}$$
$\frac{1280}{1107}\approx 1.156278229$
$$\frac{3}{2}\times \frac{128}{164}\times \frac{320}{324}$$
$$\frac{3}{2}\times \frac{32}{41}\times \frac{320}{324}$$
$$\frac{3\times 32}{2\times 41}\times \frac{320}{324}$$
$$\frac{96}{82}\times \frac{320}{324}$$
$$\frac{48}{41}\times \frac{320}{324}$$
$$\frac{48}{41}\times \frac{80}{81}$$
$$\frac{48\times 80}{41\times 81}$$
$$\frac{3840}{3321}$$
$$\frac{1280}{1107}$$
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$\frac{2 ^ {8} \cdot 5}{3 ^ {3} \cdot 41} = 1\frac{173}{1107} = 1.156278229448961$
