The story goes that a young man away at college needed some extra cash. he sent his mother this plea. he wanted her to send the amount indicated by the following sum: send + more = money. each letter stands for a different digit, 0 through 9. no two letters stand for the same digit. how much money did the young man want? (assume that there is a decimal point between n and e because his mother is probably not willing to send ten thousand or so dollars to her son on request.