where,A = .1.3.6.1.4.1.9.9.48.1.1.1.5.1 (Indicates the number of bytes from the memory pool that are currently in use by applications on the managed device.)B = .1.3.6.1.4.1.9.9.48.1.1.1.6.1 (Indicates the number of bytes from the memory pool that are currently unused on the managed device for the processor.)The final expression works in this fashion.(.1.3.6.1.4.1.9.9.48.1.1.1.5.1*100)/(.1.3.6.1.4.1.9.9.48.1.1.1.5.1+.1.3.6.1.4.1.9.9.48.1.1.1.6.1)