a man performs 3 / 5 of the total journey by rail , 17 / 20 by bus and the remaining 6.5 km on foot . his total journey is
n0 = 3.0
n1 = 5.0
n2 = 17.0
n3 = 20.0
n4 = 6.5

answer = n3 * n4
print(answer)