1,234,567,890 x 2,345,678,901 x 3,456,789,012 x 4,567,890,123 x 5,678,901,234 x 6,789,012,345 x 7,890,123,456 x 8,901,234,567 x 9,012,345,678 = 1,115,873,232,351,927,599,146,816,265,058,756,315,937,992,844,543,297,313,217,139,380,345,363,627,839,999,537,203,200
It is approx 1.1158732*1087.