 
 <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 <ibo> Maka usoro echiche a na azịza ya, gịnị bụ ajụjụ ahụ? Ọ na-emega ahụ maka 1.5 * 60 = 90 nkeji n'otu klas. Ya mere, ọ na-ere calorie 90 * 7 = 630 kwa klas. Nke ahụ pụtara na ọ na-ere calorie 630 * 3 = 1890 kwa izu.  A: Afọ 1890 