May you please help with explanations for each and how to get the contribution

Problem B Hi-Tech is the creator of YGo, a technology that weaves silver into the fabric to kill bacteria and odour on clothing while managing heat. YGO has become very popular in undergarments for sports activities. Operating at capacity, Hi-Tech can produce 500,000 undergarments each year. The normal selling price is $10 per unit The per unit cost for each unit is as follows: Per unit Direct materials $2.00 Direct labour 0.50 Variable manufacturing overhead 100 Fixed manufacturing overhead 1,25 Variable selling expenses 025 The Canadian armed forces (CAF) has approached Hi Tech and expressed an interest in purchasing 75,000 YGO undergarments for soldiers stationed in hot climates. Required: To answer a, b, and c, use the minimum price model: Minimum price model Variable cost XX Plus: Lost CM on regular sales E Equals Total minimum price (TMP) XX Unit price (TMP/ units in special order) a) If Hi-Tech is operating at 100% capacity what is the minimum price to charge? b) If Hi- Tech is operating at 90% capacity what is the minimum price to charge? c) If Hi-Tech is operating at 70% capacity what is the minimum price to charge? (1) Assume High Tech is operating at 90% capacity and Hi-tech receives a special order from the CAF for 75,000 YGos at a selling price of $8.00 per unit. Compute the increase in prot (or loss) if High Tech accepts the order