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  1. f=lambda x:eval('/'.join('{}*{}'.format(*i)for i in x)[2:-2])
  2.  
  3. for i in [[[1,1],[2,2]],[[1,2],[1,2],[1,2]],[[6,12],[3,10],[5,8]]]:
  4. print(f(i))
Success #stdin #stdout 0.03s 9984KB
stdin
Standard input is empty
stdout
0.5
4.0
8.0