L,B= map(float,input().split())
print("%5.5f"%(L*B))

d25f8f7f146b0cd6d383e24e4960672df2ba9401
<mask token>

<mask token>
print('%5.5f' % (L * B))

L, B = map(float, input().split())
print('%5.5f' % (L * B))

L,B= map(float,input().split())
print("%5.5f"%(L*B))
