Computer Architecture problems

I have an assignment and I have to submit it after 2 hours and I couldn't solve this question ..

1. Using Booth’s algorithm find the result of 8 multiplied by -7.

2. Let multiplicand be –610 and multiplier be –910. Show phases of computation with respect to Booth’s Algorithm.

Given x = 0101 and y = 1010 in twos complement notation (i.e. x = 5 and y = -6), compute the product p = x * y with Booth’s Algorithm.