laravel 用model的方法 分组查询信息

Question

select statedate,comcode,usenaturecode,newcarflag,businessnature,sum(sumpremium) as t_sumpremium,sum(dirpolexssum) as t_dirpolexssum,sum(agentexs) as t_agentexs,sum(perexs) as t_perexs,sum(maintainexs) as t_maintainexs,sum(xsfyzdy) as t_xsfyzdy from ai:ccpqry.meb_m_summary where statedate='2020-03-06' and comcode='512' and riskcode='ALL' group by statedate,comcode,usenaturecode,newcarflag,businessnature order by usenaturecode,newcarflag,businessnature;

这段SQL用laravel的model方法要怎么写？