2. The contract is set at 2300, indicating that five insurances and one gold are paid at the rate of 2300;
3. Specific payment amount: provident fund =2300*0.08= 184 yuan, endowment insurance =2300*0.08= 184 yuan, medical insurance =2300*0.02=46 yuan, and unemployment insurance = 2300 * 0.01.
4. Actual income = 2300-184-184-46-23 =1863 yuan.