**I need help in part b.

Bill Campbell invested $4,400 and borrowed $4,400 to purchase shares in Kellogg. At the time of his investment, Kellogg stock was selling for $53 a share. (a) If Bill paid a $57 commission, how many shares could he buy if he used his $4,400 and borrowed $4,400 on margin to buy Kellogg stock? (Round your answer to 2 decimal places.) Number of shares 164.96 (b) Assuming Bill did use margin, paid a $99 total commission to sell his Kellogg stock, and sold his stock for $58 a share, how much profit did he make on his Kellogg investment? (Use the number of shares computed in part (a) rounded to 2 decimal places. Round your final answer to 2 decimal places.) Total profit after commissions $ 668.81