计算（1）[5-378÷（156+2.25×13）]÷12.50%（2）[2-（8.25-513）×23]÷0.9．

Question

计算
（1）[5-3 (7)/(8) ÷（1 (5)/(6) +2.25× (1)/(3) ）]÷12.50%    
（2）[2-（8.25-5 (1)/(3) ）× (2)/(3) ]÷0.9．

Answer 1

（1）[5-3 (7)/(8) ÷（1 (5)/(6) +2.25× (1)/(3) ）]÷12.50%，
=[5-3 (7)/(8) ÷（ (11)/(6) + (3)/(4) ）]×8，
=[5- (31)/(8) × (12)/(31) ]×8，
=3.5×8，
=28；

（2）[2-（8.25-5 (1)/(3) ）× (2)/(3) ]÷0.9，
=[2-（8.25-5 (1)/(3) ）× (2)/(3) ]÷0.9
=[2-（ (99)/(12) - (64)/(12) ）× (2)/(3) ]÷0.9，
=[2- (35)/(12) × (2)/(3) ]× (10)/(9) ，
= (1)/(18) × (10)/(9) ，
= (5)/(81) ．