4. [20 marks] Integer Multiplication I. a) Multiply the following 6-bit unsigned binary numbers. x = 110 011 (multiplicand) and y = 101 101 (multiplier). i) Show the initial value of the accumulator, and ii) Show each new distinct value of the accumulator up to and including the final answer. Show the accumulator in hexadecimal. b) Redo the multiplication steps exactly as in question 4 a), but initialize the accumulator to 100 001 instead of 000 000. What are the successive distinct values of the accumulator? Use the format of Qn. 4.