(123456789×123456789)-(123456794×123456784)=?

$$\left({\mathtt{123\,456\,789}}{\mathtt{\,\times\,}}{\mathtt{123\,456\,789}}\right){\mathtt{\,-\,}}\left({\mathtt{123\,456\,794}}{\mathtt{\,\times\,}}{\mathtt{123\,456\,784}}\right) = {\mathtt{25}}$$

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