Fill in >, < or =. 2. What fractions are shown by the arrow?

$$
\frac{1}{3} = \frac{1 \times 4}{3 \times 4} = \frac{4}{12}
$$
$$
\frac{1}{4} = \frac{1 \times 3}{4 \times 3} = \frac{3}{12}
$$

$$
\frac{4}{12} > \frac{3}{12}
$$
So, $\boxed{\frac{1}{3} > \frac{1}{4}}$.

$$
\frac{3}{5} = \frac{3 \times 3}{5 \times 3} = \frac{9}{15}
$$
$$
\frac{2}{3} = \frac{2 \times 5}{3 \times 5} = \frac{10}{15}
$$

$$
\frac{9}{15} < \frac{10}{15}
$$
So, $\boxed{\frac{3}{5} < \frac{2}{3}}$.

$$
\frac{4}{7} = \frac{4 \times 5}{7 \times 5} = \frac{20}{35}
$$
$$
\frac{2}{5} = \frac{2 \times 7}{5 \times 7} = \frac{14}{35}
$$

$$
\frac{20}{35} > \frac{14}{35}
$$
So, $\boxed{\frac{4}{7} > \frac{2}{5}}$.

$$
\frac{1}{3} = \frac{1 \times 2}{3 \times 2} = \frac{2}{6}
$$

$$
\frac{1}{6} < \frac{2}{6}
$$
So, $\boxed{\frac{1}{6} < \frac{1}{3}}$.

$$
\frac{2}{8} = \frac{2 \div 2}{8 \div 2} = \frac{1}{4}
$$

$$
\frac{1}{4} = \frac{1}{4}
$$
So, $\boxed{\frac{2}{8} = \frac{1}{4}}$.

$$
\frac{2}{5} = \frac{2 \times 2}{5 \times 2} = \frac{4}{10}
$$

$$
\frac{4}{10} > \frac{3}{10}
$$
So, $\boxed{\frac{2}{5} > \frac{3}{10}}$.