V_{walca}=\Pi r^2H=\Pi (18cm^2)^2*120cm=2160\Pi cm^3
V_{kuli}=\frac{4}{3} \Pi r^3=\frac{4}{3} \Pi (\frac{3}{2})^3=\frac{4}{3} \Pi (1,5)^3=3,375 \frac{4}{3} \Pi=3\frac{375}{1000}*\frac{4}{3} \Pi=\frac{3375}{1000}*\frac{4}{3} \Pi=\frac{1125}{250} \Pi=4,5 \Pi cm^3
\frac{V_{walca}}{V_{kuli}}=\frac{2160\Pi cm^3}{4,5\Pi cm^3}=480 czekoladek