Calculation: 436*435435436-435*436436435=how much.
计算：436*435435436-435*436436435=多少．
<gadget id="calculator">436 * 435_435_436</gadget>
<output>189_849_850_096</output>

<gadget id="calculator">435 * 436_436_435</gadget>
<output>189_849_849_225</output>

<gadget id="calculator">189_849_850_096 - 189_849_849_225</gadget>
<output>871</output>

<result>871</result>