Two variable$-$length BCD $($Binary$-$Coded Decimal$)$ numbers are stored in separate locations in RAM. For example, the first $24-$bit BCD number is stored in consecutive memory locations starting from $40$h$,$ and the second $32-$bit BCD number is stored in consecutive locations starting from $80$h$.$Select operands so that the result is positive always.Perform addition and subtraction of both numbers and store the results in RAM.