1. **Problem statement:** Convert units from one system to another, for example, converting meters to centimeters. 2. **Formula and rules:** To convert units, multiply by the conversion factor. For example, 1 meter = 100 centimeters, so multiply meters by 100 to get centimeters. 3. **Example:** Convert 5 meters to centimeters. 4. **Calculation:** $$5 \text{ meters} \times 100 = 500 \text{ centimeters}$$ 5. **Explanation:** We multiply the number of meters by 100 because each meter contains 100 centimeters. 6. **Final answer:** 5 meters equals 500 centimeters.