1. The problem is to simplify the expression $20X3$. 2. This expression represents multiplication of three numbers: 20, X, and 3. 3. The multiplication rule states that you multiply the numbers together: $20 \times X \times 3$. 4. Multiply the constants first: $20 \times 3 = 60$. 5. Now multiply by $X$: $60 \times X = 60X$. 6. Therefore, the simplified expression is $60X$.