"What is a 7 letter word (X)?, where 2) X is impossible for God 3) new babies like ""X"" better than milk 4) the poor have X  5) the rich look for X from the poor 6) if you eat X you will die, and 7) X is more important than your life."
What is the postfix expression of 4+3*10/6+7-4/2+5^3?