$$[3+\{1.25\times3.85\div(5.64-2.7+1.4)\}]$$
$\frac{1019}{248}\approx 4.108870968$
$$3+\frac{4.8125}{5.64-2.7+1.4}$$
$$3+\frac{4.8125}{2.94+1.4}$$
$$3+\frac{4.8125}{4.34}$$
$$3+\frac{48125}{43400}$$
$$3+\frac{275}{248}$$
$$\frac{744}{248}+\frac{275}{248}$$
$$\frac{744+275}{248}$$
$$\frac{1019}{248}$$
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$\frac{1019}{31 \cdot 2 ^ {3}} = 4\frac{27}{248} = 4.108870967741935$