Oh I've done that a number of times.
( Oh ( I ( ( 've ( done ( that ( ( a number ) ( of times ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Oh)) (NP (PRP I)) (VP (VBP 've) (VP (VBN done) (PP (IN that) (NP (NP (DT a) (NN number)) (PP (IN of) (NP (NNS times))))))) (. .)))
I've slept in that hotel many times.
( I ( ( 've ( ( slept ( in ( that hotel ) ) ) ( many times ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP 've) (VP (VBD slept) (PP (IN in) (NP (DT that) (NN hotel))) (NP (JJ many) (NNS times)))) (. .)))