I have a problem with units again. Can you help me ? Here's my input (I've also attached the .sm file):
D = 80 mm d = 45 mm f = 500 mm t = 9 s
S = (π*(D^2-d^2))/4
Q = (S*f)/t
Result of the last formula is given in m^3/s but I would like to convert it to l/min (liters per minute). I click on the right placeholder and type: 'l/'min but the output I get is wrong: