$$40+12 \div 18 \div 60=$$
$\frac{3601}{90}\approx 40.011111111$
$$40+\frac{12}{18\times 60}$$
$$40+\frac{12}{1080}$$
$$40+\frac{1}{90}$$
$$\frac{3600}{90}+\frac{1}{90}$$
$$\frac{3600+1}{90}$$
$$\frac{3601}{90}$$
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$\frac{13 \cdot 277}{2 \cdot 3 ^ {2} \cdot 5} = 40\frac{1}{90} = 40.01111111111111$
