1999 |
2000 |
1 |
2000 |
=1999÷(
1999×2000+1999 |
2000 |
1 |
2000 |
=1999÷
1999×(2000+1) |
2000 |
1 |
2000 |
=1999×
2000 |
1999×2001 |
1 |
2000 |
=
2000 |
2001 |
1 |
2000 |
=1-
1 |
2001 |
1 |
2000 |
=1+
1 |
2000 |
1 |
2001 |
=1+
1 |
2000×2001 |
=
4002001 |
4002000 |
1999 |
2000 |
1 |
2000 |
1999 |
2000 |
1 |
2000 |
1999×2000+1999 |
2000 |
1 |
2000 |
1999×(2000+1) |
2000 |
1 |
2000 |
2000 |
1999×2001 |
1 |
2000 |
2000 |
2001 |
1 |
2000 |
1 |
2001 |
1 |
2000 |
1 |
2000 |
1 |
2001 |
1 |
2000×2001 |
4002001 |
4002000 |