How to calculate the actual price of Ctrip guest orders

The actual price of Ctrip guest orders is calculated according to the commission of 15%. Ctrip's commission is as high as 15%, that is, if the low price I set is 100, then the price of the guest's pre-order should be 100 plus 15%, which is 1 15. The listing price of the hotel room type on Ctrip is also the room rate that guests can see and need to actually pay.