125×32+125×34+125×4=125×(32+34+4)=125×70=8750
125ⅹ32=125X8X4=4000125X34=125X4+125X30=1750125X4=500
125*32+125*34+125*4=125*(32+34+4)=125*70=8750
125*32=125*8*4=1000*4=4000125*34=125*32+125*2=4000+250=4250125*4=125*8/2=4000/2=2000