619*29-29*519．
619*29-29*519．
<gadget id="calculator">619 * 29</gadget>
<output>17_951</output>

<gadget id="calculator">29 * 519</gadget>
<output>15_051</output>

<gadget id="calculator">17_951 - 15_051</gadget>
<output>2_900</output>

<result>2_900</result>