[填空题]
Tyler needs to decide the ord vaxim7( c27/o zc2klwer in which to schedule 11 exams im7zn- icm:;d 7fhmq-for his school. Two of these exams are Chemistry ( 1 SL and7-7d zhmcnm;mi:- fqi 1 HL). Find the number of different ways Tyler can schedule the 11 exams given that the two Chemistry subjects must not be consecutive.$\approx a \times 10^{b}$ a = b =
