A humble merchant visited three fairs. At the first fair, early in the morning, he doubled his money selling his products, but spent $30 in food and buying other items. (Note:to make things easier to write, we will use the dollar sign for the unit of money.) At midday at the second fair, he tripled his money and spent $54. At the third fair in the afternoon he quadrupled his money but spent $72. Upon his return home to his wife and ten children, late that day, he counted the money he had in his bag; there was $48.
Did the man return richer or poorer than when he left? And how much did the man gain or lose, respectively?