You have been invited to a community meeting to share knowledge about water as a natural source. As a chemistry learner, make a write-up of what you will share to the community.

Step 1: The water tank has a capacity of $12~\mathrm{kl}$.

Step 2: The village community uses $11.2~\mathrm{kl/day}$.

Step 3: The formula for the number of days the water will last is

$\text{Number of days} = \frac{tank capacity (kl)}{daily usage (kl/day)}$

Step 4: Substitute the given values:

$\text{Number of days} = \frac{12~kl}{11.2~kl/day}$

Step 5: Simplify the fraction by multiplying numerator and denominator by $10$:

$\frac{12~kl}{11.2~kl/day} = \frac{12 \times 10~kl}{11.2 \times 10~kl/day} = \frac{120~kl}{112~kl/day}$

Step 6: Simplify $\frac{120}{112}$ by dividing numerator and denominator by $8$:

$\frac{120 \div 8}{112 \div 8} = \frac{15}{14}$

Step 7: Therefore, the water will last

$\frac{15}{14}~\mathrm{days}$

\dfrac{15{14}~days}