catering has its own algorithm: the product price minus the product cost, and then it can be divided by the product price multiplied by 111%. For example, 1 serving of cabbage is sold in 3 yuan, the cost is 1 yuan, and the gross profit is 66.6%.

1 serving of fish-flavored shredded pork is sold at 12 yuan. The seasoning, meat and accessories are 6 yuan, and the gross profit is 51%.

Water and electricity are not included.