Write down the decimal expansion of the rational number $\frac{35}{50}$.

(N/A) To find the decimal expansion of the rational number $\frac{35}{50}$,we can perform long division or simplify the fraction first.
Method $1$: Long Division
Divide $35$ by $50$:
$35 \div 50 = 0.7$
Method $2$: Converting to a denominator of power of $10$
$\frac{35}{50} = \frac{35 \times 2}{50 \times 2} = \frac{70}{100} = 0.7$
Thus,the decimal expansion of $\frac{35}{50}$ is $0.7$.