A partner sold a 25% interest in a partnership for $400,000 cash plus assumption of the partner's share of the partnership liabilities. The following additional information relates to the partnership activities: Partner's initial cash contribution $100,000 Partnership income during the partner's ownership time period 1,000,000 Partnership liabilities at date of sale 60,000 Partner's cash withdrawals 50,000 How much gain is recognized by the partner upon the sale of the partnership interest