Accumulating INVOICE values from SASHELP.CARS dataset for each MAKE and for each TYPE within that MAKE. There are various makes like TOYOTA, HONDA etc. present in SASHELP.CARS dataset and each of these MAKES have various types like SEDAN, SUV etc.; Now lets consider our requirement is to calculate the total of INVOICE amount for each type under each make and total of INVOICE amount for each MAKE as well.
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