profitably — yielding profit; remunerative: a profitable deal.
unuseful — being of use or service; serving some purpose; advantageous, helpful, or of good effect: a useful member of society.
advantageously — providing an advantage; furnishing convenience or opportunity; favorable; profitable; useful; beneficial: an advantageous position; an advantageous treaty.
lucrative — profitable; moneymaking; remunerative: a lucrative business.
productively — having the power of producing; generative; creative: a productive effort.