of all the homes on gotham street , 1 / 3 are termite - ridden , and 4 / 7 of these are collapsing . what fraction of the homes are termite - ridden , but not collapsing ?
n0 = 1.0
n1 = 3.0
n2 = 4.0
n3 = 7.0
t0 = n0 + 2.0
t1 = n1 * n3
answer = t0 / t1
print(answer)