819 - 163.80 (20% OFF) = ₹655.20

555.25 + 99.95 (18%) = 655.20

• 4 + @ 24% : 527.49 + 18% = 622.44
• 8 + @ 28% : 499.73 + 18% = 589.68
• 12 + @ 32% : 471.97 + 18% = 556.92