月利率为6.80%/12 23.9万25年(300个月)月还款额: 239000*6.80%/12*(1+6.80%/12)^300/[(1+6.80%/12 )^300-1]=1658.83元说明:^300为300次方30年(360个月)月还款额: 239000*6.80%/12*(1+6.80%/12)^360/[(1+6.80%/12 )^360-1]=1558.10元说明:^360为360次方