Will he pay you all your salary after you move out? Or did he keep part of it as pocket money?
Is his salary paid by the month? If so, what is his monthly salary?
What does your daily expenses include? Such as rent, utilities, catering, entertainment, etc.
Whether there are other large expenditures, such as loans and shopping.
According to the information you provided, you can try the following methods to calculate the amount of money he gave you:
Count how much he gives you every month. This may be his whole salary, or it may be only a part.
Plus his monthly allowance. According to your description, he only has an allowance of one or two hundred yuan a month.
Calculate monthly fixed expenses, such as rent, utilities, etc. These expenses are usually recorded on the bill.
Monthly catering expenditure statistics. If you eat out, you can calculate the cost according to the bill or receipt.
If there are other large expenses, such as loans or shopping, they should also be included in the expenses.
Add up the above expenses and subtract his monthly income (that is, his salary) to get his monthly net income.
It should be noted that the above methods can only roughly calculate the amount of money he gave you, and cannot be accurate to the specific amount. If you still have doubts, you can try to communicate with him, understand his income and expenditure, and plan future financial arrangements.