There is a list of numbers, the first number is 120, the second number is 80, starting from the third number, each number is the average of the previous two numbers. What is the integer part of the 2009th number?
有一列数，第一个数是120，第二个数是80，从第三个数开始，每个数都是它前面两个数的平均数．则第2009个数的整数部分是多少．
<result>93</result>