$$\begin{aligned}2\ A\ 3\ 4&\\ 7\ 3\ 6&\\ \underline{6\ c\ 7}&\\ 3\ 4\ 9&\end{aligned}$$
$335870518A_{34}B$
$$667=23\times 29$$
$$335870518A_{34}B$$
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$2A_{34},\ 73B,\ 667,\ 3449$
