The top ten medals in the Asian Games are 153, 128, 121.5, 128, 130, 120.5, 79, 65, 52.5, 51. What is the median of this set of numbers.
亚运会奖牌榜前十名成绩153、128、121.5、128、130、120.5、79、65、52.5、51．这组数的中位数是多少．
<gadget id="calculator">120.5 + 121.5</gadget>
<output>242</output>

<gadget id="calculator">242 / 2</gadget>
<output>121</output>

<result>121</result>