1. **State the problem:** Solve for $n$ in the equation $6.3 = 9n$. 2. **Formula and rules:** To isolate $n$, divide both sides of the equation by 9. 3. **Intermediate work:** $$6.3 = 9n$$ Divide both sides by 9: $$\frac{6.3}{\cancel{9}} = \frac{9n}{\cancel{9}}$$ 4. **Simplify:** $$n = \frac{6.3}{9}$$ 5. **Calculate the value:** $$n = 0.7$$ 6. **Answer:** The solution is $n = 0.7$.