25*24=25*(4*6)=(25*4)*6=100*6=600
25*24=25*4*6=100*6=600
=25×4×6×12 =100×72 =7200 =25×4×6×12 =100×72 =720025*24*12=5*5*4*6*3*4=(5*6*3)*(5*4*4)=90*80=7200
25*4*6=100*6=600
25*4*6=600
