$$= 4 + \frac { 1 } { 4 } \times \frac { 1 } { 18 } = 18 \frac { 1 } { 18 }$$
$\text{false}$
$$144+9\times \frac{1}{18}=2\left(18\times 18+1\right)$$
$$144+\frac{9}{18}=2\left(18\times 18+1\right)$$
$$144+\frac{1}{2}=2\left(18\times 18+1\right)$$
$$\frac{288}{2}+\frac{1}{2}=2\left(18\times 18+1\right)$$
$$\frac{288+1}{2}=2\left(18\times 18+1\right)$$
$$\frac{289}{2}=2\left(18\times 18+1\right)$$
$$\frac{289}{2}=2\left(324+1\right)$$
$$\frac{289}{2}=2\times 325$$
$$\frac{289}{2}=650$$
$$\frac{289}{2}=\frac{1300}{2}$$
$$\text{false}$$
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