2.525*45**2-2.525*35**2.
2.525*45**2-2.525*35**2．
<gadget id="calculator">45 ** 2</gadget>
<output>2_025</output>

<gadget id="calculator">2.525 * 2_025</gadget>
<output>5_113.125</output>

<gadget id="calculator">35 ** 2</gadget>
<output>1_225</output>

<gadget id="calculator">2.525 * 1_225</gadget>
<output>3_093.125</output>

<gadget id="calculator">5_113.125 - 3_093.125</gadget>
<output>2_020</output>

<result>2_020</result>