Fuente TeX:

\Delta T = \frac{57900~W}{\left( \frac{5000~lt/h}{3600~s/h} \right) \times (4186~J/lt ^{o}C)} = \frac{(57900~W)\times(3600~s/h)}{(5000~lt/h)\times(4186~J/lt~^{o}C)}