A cube and a cuboid are put together to form a new cuboid. The surface area of the resulting cuboid is 50 square meters larger than the surface area of the original cuboid. What is the surface area of the original cube?
一个正方体和一个长方体拼成一个新的长方体，拼成的长方体的表面积比原来的长方体的表面积增加了50平方米．原来正方体的表面积是多少平方米？
<gadget id="calculator">50 / 4</gadget>
<output>25/2 = around 12.5</output>

<gadget id="calculator">(25/2) * 6</gadget>
<output>75</output>

<result>75</result>