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$\dfrac{3}{8}$ $.$ $27\dfrac{1}{5}$ $-$ $51\dfrac{1}{5}$ $.$ $\dfrac{3}{8}$ $+$ $19$
$=$ $\dfrac{3}{8}$ $.$ $\dfrac{136}{5}$ $-$ $\dfrac{256}{5}$ $.$ $\dfrac{3}{8}$ $+$ $19$
$=$ $\dfrac{3}{8}$ $.$ $($ $\dfrac{136}{5}$ $-$ $\dfrac{256}{5}$ $)$ $+$ $19$
$=$ $\dfrac{3}{8}$ $.$ $($ $-24$ $)$ $+$ $19$
$=$ $-9$ $+$ $19$
$=$ $10$
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