2012.25*2013.75-2010.25*2015.75=how much
2012.25*2013.75-2010.25*2015.75=多少
<gadget id="calculator">2_012.25 * 2_013.75</gadget>
<output>4_052_168.4375</output>

<gadget id="calculator">2_010.25 * 2_015.75</gadget>
<output>4_052_161.4375</output>

<gadget id="calculator">4_052_168.4375 - 4_052_161.4375</gadget>
<output>7</output>

<result>7</result>