Имам проблем с една от задачите във Fundamentals Module with C#.

https://pastebin.com/VRr7KDuP

Judge ми дава 30/100. Мисля, че проблемът е в условието че всеки 6 колан трябва да е безплатен. Някой ако може да помогне ще съм благодарен. Ето и условието:

• The amount of money Ivan Cho has – floating-point number in range [0.00…1,000.00]
• The count of students – integer in range [0…100]
• The price of lightsabers for a single sabre – floating-point number in range [0.00…100.00]
• The price of robes for a single robe – floating-point number in range [0.00…100.00]
• The price of belts for a single belt – floating-point number in range [0.00…100.00]
• The input data will always be valid. There is no need to check it explicitly.
  Output
  The output should be printed on the console.
• If the calculated price of the equipment is less or equal to the money Ivan Cho has:
  • "The money is enough - it would cost {the cost of the equipment}lv."
• If the calculated price of the equipment is more than the money Ivan Cho has:
  •  "Ivan Cho will need {neededMoney}lv more."
• All prices must be rounded to two digits after the decimal point.