please dont answer my by excel .. would be better if use your PC to answer ,, as well as provide the formula

(6) You are considering a homeowner's insurance policy. The policy includes damage to your home and its contents but limits the coverage for losses of jewelry to a total value of RM1,000. In addition, the policy has a RM500 deductible. For an additional amount, you can increase the coverage on your jewelry, subject to an appraisal. You can also pay a higher premium to reduce the deductible to RM200. Explain the purpose of these contractual provisions from the insurer's point of view. (6 marks)