Please do by hand on paper. If you do it in excel please explain how to do it I dont know how to use excel and I need to understand each step. Thanks.

14.7. Let S = $40, K = $45, = 0.30, r = 0.08, = 0, and T = { 0.25, 0.5, 1,2, 3 , 4, 5, 100) a. Compute the prices of knock-out calls with a barrier of $38. b. Compute the ratio of the knock-out call prices to the prices of standard calls. Explain the pattern you see. 14.7. Let S = $40, K = $45, = 0.30, r = 0.08, = 0, and T = { 0.25, 0.5, 1,2, 3 , 4, 5, 100) a. Compute the prices of knock-out calls with a barrier of $38. b. Compute the ratio of the knock-out call prices to the prices of standard calls. Explain the pattern you see