1，37037037X27027027等于几
原式=37*1001001×27*1001001=(37*27)×1001001^2=1.001000998998999*10^15
2，9999999999999999999999X999999999999999999等于多少啊我算
你可以利用规律来算，
9*9=81
99*99=98 01
999*999=998 001
9999*9999=9998 0001
按这个规律，你应该会算出上题的正确答案的
3，999999999x9999999991999999999
等于2000000000
9999999998000000001
999999999*999999999+1999999999
=999999999*999999999+999999999+1000000000
=999999999(999999999+1)+1000000000
=999999999*1000000000+1000000000
=1000000000(999999999+1)
=1000000000*1000000000
=1000000000000000000
100000000000000000000
9999999998000000001
1231564
