1234*432143214321-4321*123412341234
问题描述：
1234*432143214321-4321*123412341234
答
1234*432143214321-4321*123412341234
=1234*(4321*100010001)-4321(*1234*100010001)
=0
答
1234*432143214321-4321*123412341234
=1234*4321*100010001-4321*1234*100010001
=0
答
=1234*4321(1*100010001000-1*100010001000)
=0