Quantum Rate of Photosynthesis

[ForeverUNDERGRAD]

Hello, I 'm looking for a formula for converting microlitres of oxygen produced at a rate gram per minute TO micro-mole Carbon Dioxide taken in per square meter of leaf per second.

(ul O2 g^-1/min to uM CO2 m^-2/g)

Came across it in an old textbook, curious to see how it is solved.

Thanks.