1234567891**2-1234567890*1234567892=how many.
1234567891**2-1234567890*1234567892=多少．
<gadget id="calculator">1_234_567_891 ** 2</gadget>
<output>1_524_157_877_488_187_881</output>

<gadget id="calculator">1_234_567_890 * 1_234_567_892</gadget>
<output>1_524_157_877_488_187_880</output>

<gadget id="calculator">1_524_157_877_488_187_881 - 1_524_157_877_488_187_880</gadget>
<output>1</output>

<result>1</result>