$$1\frac{1}{4}+2=$$
$\frac{13}{4}=3.25$
$$\frac{4+1}{4}+2$$
$$\frac{5}{4}+2$$
$$\frac{5}{4}+\frac{8}{4}$$
$$\frac{5+8}{4}$$
$$\frac{13}{4}$$
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$\frac{13}{2 ^ {2}} = 3\frac{1}{4} = 3.25$
