I need steps please

Styles Editing Elements Numerical - Practice O Progress 3/12 072 seconds to complete this question Month's sales of Internet and cable TV packages Platinum Executive Premium Diamond Silver A customer purchases a Diamond contract and then switches 6 months later to a Platinum contract due to a sale deal of 20% off the monthly Platinum package cost. What's the total cost for the customer over the two contract periods? North 4,630 3,765 6,100 6,125 6,300 North East 8,965 8,600 3,765 4,765 6,100 Once yiu have selected your answer(s), please press 'Submit response'. East 6,725 6,000 5,700 6,730 5450 Select correct (or nearest) answer. South-East 8,700 6,120 6,760 6,800 6,325 South 6,800 8,760 4,900 3,630 3.500 3,700 South-West 5,070 5,300 3,775 6.265 5,450 7,500 8,600 8,965 6,125 West 25 30 40 45 60 Monthly Cost (K) 24 12 Contract Length (months) 24 12