Our maths lecturer, was leaving to US for his further studies

we gave farewell 
in the party this was my marvel

he adds friends
subtracts enemies

divides ignorance
multiplies virtues

differentiates good bad

integrates all in to one

All this will improve the percentage REPLY
Multiplies virtues'', interestingly,  with compounded interest proportionately i am his affectionately you have given me more marks ,  simply your generosity, it marks