how to calculate the binoimal tree topic?

calculation step please

Put Options (cont' d) $74.678 50.000 A binomial tree for a European put option with 1-year to expiration $61.149 $0.000 A=0.000 B - 50.000 $50.071 $0.741 A-0.078 B$4.659 $52.814 $0.000 $41.000 $2.999 A=-0.294 B = $15.039 $43.246 $1,401 A=-0.171 B=$8.809 $35.411 $5.046 A=-0.550 B = $24.517 $37.351 $2.649 $30.585 $8.363 A=-1.000 B = $38.947 S = $41.00, K = $40.00, 0 = 0.30, r= 0.08, T = 1.00 year, 7 = 0.00, and h = 0.333. $26.416 $13.584 Put Options (cont' d) $74.678 50.000 A binomial tree for a European put option with 1-year to expiration $61.149 $0.000 A=0.000 B - 50.000 $50.071 $0.741 A-0.078 B$4.659 $52.814 $0.000 $41.000 $2.999 A=-0.294 B = $15.039 $43.246 $1,401 A=-0.171 B=$8.809 $35.411 $5.046 A=-0.550 B = $24.517 $37.351 $2.649 $30.585 $8.363 A=-1.000 B = $38.947 S = $41.00, K = $40.00, 0 = 0.30, r= 0.08, T = 1.00 year, 7 = 0.00, and h = 0.333. $26.416 $13.584