 
 <translate> For this chain-of-thought reasoning and answer, what was the question?
He works out for 1.5 * 60 = 90 minutes per class. So he burns 90 * 7 = 630 calories per class. That means he burns 630 * 3 = 1890 calories per week.
 A: 1890 <hau> Don wannan tunani mai zurfi da amsa, menene tambaya? Yana motsa jiki na tsawon minti 1.5 * 60 = 90 a kowane aji. Saboda haka yana ƙone 90 * 7 = 630 calories a kowane aji. Wannan yana nufin ya ƙone 630 * 3 = 1890 calories a mako.  A: 1890 