If a rectangle with a length of 6 cm and a width of 5 cm is enlarged by 2:1, what is the area in square centimeters?
一个长6厘米，宽5厘米的长方形按2：1放大，之后的面积是多少平方厘米．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">12 * 10</gadget>
<output>120</output>

<result>120</result>