How to solve this excel sheet? Solve this please, I do not know how to solve it

As part of the promoting the Crystal Wellness Centre, your team has been appointed to help to organise the Crystal Hotel Wellness Centre Opening Luncheon. The hotel is expecting 300 guests to attend the event. Your team has been given a list of resources that need to be outsourced that is included in the Appendix 4 of this document. The Hotel Restaurant will provide the food and beverages and the price is included in your list. Casual staff will be hired by the hotel at the rate given to you in the Appendix 4. The Audio Visual System and Staging are provided internally and do not need to be budgeted for. The rest of the required items will need to be outsourced. You are expected to find suitable suppliers online and to complete the event costing. In terms of the entertainment, your team needs to choose an appropriate supplier for this type of event. The gift hampers are to be given to the hotel's long-term corporate clients. Additionally, every visitor will receive a small promotional gift. While the event is planned to last for three hours, the chair covers are required to be hired for 5 hours in total. The overall budget for the resources listed is $20,500.APPENDIX 4 Resources Quantity Chair Cover Hire - Black Lycra with Aqua & Hot Pink Lycra Bands 300 pieces Gift Hampers 10 pieces Open Entertainment 3 hours Balloon centerpieces 30 pieces Guest Gifts 300 pieces Food Based on $30.08 per person 300 people Beverage based on $9 per person 300 people AV system and staging Provided internally Event Staff Rate 22$/hour 70 hours