222乘999加333乘334 =666x333+333x334=333x(666+334)=333x1000=333000
222*1000-222+333*300+333*30+333*4=221778+99900+9990+1332=333000222*333+222*333+222*333+333*222+333*112=333*(222*4+112)=333*1000=333000
222 x999加333乘334