To convert kiloliters (kL) to milliliters (mL), we need to know the conversion factors. 1 kL is equal to 1,000,000 mL. Therefore, we multiply the given value in kL by 1,000,000 to get the value in mL.
Para convertir de kilolitros (kL) a mililitros (mL), utilizamos la relación de conversión:
\[
1 \, \text{kL} = 1{,}000{,}000 \, \text{mL}
\]
Dado que tenemos \(7.5 \, \text{kL}\), aplicamos la conversión:
\[
\text{mililitros} = 7.5 \, \text{kL} \times 1{,}000{,}000 \, \text{mL/kL} = 7{,}500{,}000 \, \text{mL}
\]
La cantidad convertida es \(7{,}500{,}000 \, \text{mL}\).
\(\boxed{7{,}500{,}000 \, \text{mL}}\)