What is the minimum n that satisfies the following formula.(1/(1*2))+(1/(2*3))+(1/(3*4))+…+(1/(n*(n+ 1)))>(1949/1998).
满足下式的n最小等于多少.(1/(1*2))+(1/(2*3))+(1/(3*4))+…+(1/(n*(n+1)))＞(1949/1998)．
<result>40</result>