1. **State the problem:** Hillary collects three times more bottles than Morgan, which is expressed as the equation $h = 3m$. 2. **Given:** $m = 6$ (Morgan collected 6 bottles). 3. **Substitute the value of $m$ into the equation:** $$h = 3 \times 6$$ 4. **Multiply:** $$h = 18$$ 5. **Interpretation:** Hillary collected 18 bottles because she collects three times the amount Morgan collected. This shows how to use substitution and multiplication to solve one-step equations.