Profit and loss problem can be solved by profit and loss formula. It is not always possible to divide several objects evenly among a certain number of objects. If an object has surplus, it is called surplus; If the object is not divided enough, it is called a loss. Any research on the application of profit and loss algorithm is called profit and loss problem.

General solution: (abundance+deficit) divided by two distributions, only the difference of each copy = the number of divided objects, and the number of articles can be calculated by the number of shares and profits and losses of one of the methods.

Other (advanced): the critical point of profit and loss-the base point of stock trading volume of the exchange, beyond which profit will be realized, and vice versa.

The basic model for calculating the breakeven point: let P represent profit, V represents sales volume, SP represents unit price, VC represents unit variable cost, FC represents fixed cost, and BE represents breakeven point. According to the profit calculation formula, the basic model for calculating the breakeven point is: there are two forms for calculating the breakeven point:

1, calculated by physical unit: where the unit selling price of a product is 10 yuan, the unit variable cost is 6 yuan, and the related fixed cost is 8,000 yuan, then the sales volume of the breakeven point (physical unit) = 8,000 ÷ (10-6) = 2,000 (pieces). Gross profit of product contribution = unit product sales revenue-unit variable cost.

2. Comprehensive calculation by amount: the sales volume of breakeven point (expressed by amount) = fixed cost ÷ contribution gross margin.

Among them, contribution gross margin = contribution gross margin/sales revenue.