$$19 \frac { 5 } { 7 } \frac { 138 } { 7 }$$
$\frac{19044}{49}\approx 388.653061224$
$$\frac{133+5}{7}\times \frac{138}{7}$$
$$\frac{138}{7}\times \frac{138}{7}$$
$$\frac{138\times 138}{7\times 7}$$
$$\frac{19044}{49}$$
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$\frac{2 ^ {2} \cdot 3 ^ {2} \cdot 23 ^ {2}}{7 ^ {2}} = 388\frac{32}{49} = 388.6530612244898$
