求翻译：和增项工程费257699.30元，共计：630981.6 元。上月已付合同的30%人民币124427.5元, 今 申请合同的60%工程款248854.8元及全部增项费共计人民币506554.1元是什么意思？

And the increased entry fee 257,699.30 Total: 630,981.6 yuan. Last month contract paid 30% RMB 124,427.5 yuan, now apply for 60% of the contract engineering of 248,854.8 yuan and full incremental fee of a total of 506,554.1 yuan

With increases the engineering cost 257699.30 Yuan, total: 630981.6 Yuan.Last month has paid contract 30% Renminbi 124427.5 Yuan, now The application contract 60% project funds 248854.8 Yuan and completely increase the item of expense total Renminbi 506554.1 Yuan

And increased project costs $ 257699.3 total: $ 630981.6. Last month prepaid contract 30% yuan of $, this application 60% works contract and all additional charges totaling $ 248854.8 to $