$$53 \cos 1.8$$
$52.9738476993837748$
$$53 \cdot 0.9995065603657316$$
$$52.9738476993837748$$
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$\frac{13 \cdot 53 \cdot 3922710205517 \cdot 7 ^ {2}}{2 ^ {14} \cdot 5 ^ {16}} = 52\frac{2434619248459440}{2500000000000000} = 52.973847699383775$
