1, the product of four digits multiplied by 9 is four digits, so the number on this four-digit thousand can only be 1, that is, "I" stands for1;

2. When the "love" in the hundreds is multiplied by 9, it cannot be carried. This number can only be 1 or 0, 1, so "love" stands for 0;

3. Starting from "the single unit of the product is 1", it is considered that this single unit multiplied by 9 is 1, only 9, so "learning" stands for 9;

4. From "9 * 9 = 8 1", it is considered that the unit of carry 8 plus "number * 9" is 0, so "number" can only represent 8.

The answer is: 1089*9=980 1.

Your adoption is my motivation! Your adoption will also bring you wealth value. We learn from each other! * * * progress!