COMMERCIAL team Frankwell won the Second Division championship yesterday and are ready to join Hong Kong football's big boys next season. Elsewhere, Police beat Shek Kip Mei 3-1 and also earned the right for promotion to the First Division. Frankwell, now in their third season in local soccer, have a $7 million budget for next season and part of that will go to Russia, from where Frankwell intend to sign their expatriate players. According to Fung Siu-wai, chairman of both the Frankwell basketball and football teams, players of Russian First Division teams Moscow Dynamo and CSKA Moscow are high on their shopping list. They are also looking for players from Latvia and Ukraine. ''We are choosing Russian players because they are new to the local soccer fans and they are not expensive,'' said Fung. Frankwell are planning to sign six expatriate players as First Division teams may be allowed to have six expats on their books next season, even though only five will be able to play at any one time. The two British Forces members, Pat Russell and Tony Carr, who have been with Frankwell this season, have a chance to stay if they are not counted as expatriates. Frankwell, who finished mid-table in the Second Division last season, plan to keep some of their Chinese players but they are looking for more talented young players and former First Division players from Second and Third Division teams like Martini to join them. They are also looking for an experienced First Division coach. Former Kui Tan official Lam Sai-hung has promised to join them. ''Our motto is 'low cost, high efficiency'. We spent $500,000 this season and have been promoted to the First Division. We will have $7 million, 14 times more, to build a strong professional team next season,'' said Fung. Frankwell finished the league campaign with a 2-0 victory over Five-One-Seven yesterday. They have 22 points on the board, just two points clear of Police. Police, third last season, said they had not decided whether to accept promotion. or stay in Second Division.