Example:
15 horsepower (550 ft·lbf/s) = 1.11855e+10 µW
1 horsepower (550 ft·lbf/s) = 745699871.5823 µW | 1 µW = 1.341022e-9 horsepower (550 ft·lbf/s)
Conversion Steps:
15 × (745.699871582 / 0.000001) = 1.11855e+10