Question 6 - MCU Arithmetic (12 pts) MSP430FR6989 has instructions to add, subtract, and perform arithmetic bit-shifting (right and left), but no instructions to divide or multiply. Using this MCU you want to find the average value of the set of decimal numbers {2,43,7,19}. Assume 8-bit registers and twos complement notation for signed numbers. First devise a scheme of how you can find the average of these numbers using 8-bit signed numbers and the given operations (pairwise addition, subtraction, and bitshifting). Then answer following questions: (a) What is the result in bits as it is stored in an 8-bit register? Enter a binary number. (b) What is the corresponding value? Enter a decimal number