"Consider a bull spread where you buy a 40-strike call and sell a 45-strike call. Suppose S=$40, =0.30, r =0.08, =0, and T =0.5.Drawagraphwithstock prices ranging from $20 to $60 depicting the prot on the bull spread after 1 day, 3 months, and 6 months " I know what are the answers (i attached the answer in a photo), but how do you get to that result? Using BS i get that the initial investment is 2.025, but then how do i get the spread?

Time to Expiration 1 day 3 months 6 months 20 25 2.13042.13042.1289 2.1304-2.1287-2.0895 30-2.1304 -2.0630-1.8319 35 -2.1304-1.56781.1396 40 -1.8736 -0.3200 -0.1055 345 2.5897 1.1393 0.9292 502.86852.12381.7113 55 2.86852.5688 2.1954 60 2.86852.7186 2.4546