How many years after the BUrmese invasion in 15634 did the Siamese surrenter and Ayutthaya became a vassal state of Burma?
return the  BUrmese invasion in  15634 ;return the  Siamese surrenter and  Ayutthaya became a vassal state of Burma ;return year of #1 ;return year of #2 ;return the  difference of #4 and  #3
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