People who earn a middle class income understand that paying attention to every penny that comes in and goes out is a smart money strategy. According to Pew Research, the median household income for middle class people in the United States in 2022 ranged from $56,600 to $169,800. And frugal middle class people are full of money-saving tips and hacks. To boost their savings, middle class people offered their best money-saving habits to those looking to boost their savings accounts. From grocer...