把下列各数按从小到大的顺序排列.0.45 0.504 0.054 0.54 < < < .
÷12=1=12: = %
7÷9=,5÷7=.
=15÷ =.
3÷ ==0.375= :24=24: .
=2.5:( )=125%=20÷( )=.