11*100*10+29000,43000:1000*100+700,39000:100:10-39

11*100*10+290001)11*100*10=110002)11000+29000=4000043000:1000*100+7001)43000:1000*100=43002)4300+700=500039000:100:10-391)39000:100:10=392)39-39=0