1.4*0.25=1,4.4=4*1.1.2.6666*3333=9999*2222,所以原式等于9999*（7778+2222）=9999*10000=99990000.3.138.64=69.32*2,所以原式等于69.32*5.6+69.32*0.1+69.32*4.3=69.32*（5.6+4.3+0.1）=69.32*10=693.2