A square is cut off by 15 cm on one side and 10 cm on the other side. The area of the remaining rectangle is reduced by 1725 cm2 from the original square. Find the area of the remaining rectangle.
一个正方形，将它的一边截去15厘米，另一边截去10厘米，剩下的长方形比原来正方形的面积减少1725平方厘米，求剩下的长方形的面积．
<gadget id="calculator">10 * 15</gadget>
<output>150</output>

<gadget id="calculator">150 + 1_725</gadget>
<output>1_875</output>

<gadget id="calculator">15 + 10</gadget>
<output>25</output>

<gadget id="calculator">1_875 / 25</gadget>
<output>75</output>

<gadget id="calculator">75 * 75</gadget>
<output>5_625</output>

<gadget id="calculator">5_625 - 1_725</gadget>
<output>3_900</output>

<result>3_900</result>