A=[]
B=[]
C=[]

for r in xrange(1,101):
    if r%7==0 or r%10==7:
        A.append(r)

k = 100
for t in xrange (len(A)):
    B.append(k)
    k = k-2

for i in xrange (len(A)):
     C.append(A[i]+B[i])

s=0
sa=0
for h in C:
    s=s+h
sa=float(s)/float(len(C))
print s
print sa