The three--fifths formula handed Jefferson his narrow victory in the presidential election of 1800 by inflating the votes of the southern states in the Electoral College 译文是：3/5规定增加了选举人团制度中南方州的选票数，使杰斐逊在1800年大选以微弱的优势获胜。
这里面handed是什么意思？inflating又是什么意思？
