620 - 124.00 (20% OFF) = ₹496.00

420.34 + 75.66 (18%) = 496.00

• 4 + @ 24% : 399.32 + 18% = 471.20
• 8 + @ 28% : 378.31 + 18% = 446.40
• 12 + @ 32% : 357.29 + 18% = 421.60