print(enter number of books order)
bo = float(input())
print(enter cost per book)
cpb = float(input())
total = bo  cpb
if total = 50.0
    shp = 25
else
    shp = 0
nt = total + shp
print(your order =  + str(total))
print(your shipping cost =  + str(shp))
print(your total cost + shipping =  + str(nt))
