For an arithmetic sequence with an even number of items, the sum of the odd and even items is 240 and 300, respectively. If the last term exceeds the first term by 105, how many terms does the arithmetic progression have?
一个项数是偶数的等差数列，奇数项和偶数项的和分别是240和300．若最后一项超过第一项105，那么，该等差数列有多少项？
<result>8</result>