Alright, let's work through 8131 times 8025 step by step
8131 × 8025 = 8025 × (8131)
+ 8025 × 1 yielding 8025
+ 8025 × 30 that equals 240750
+ 8025 × 100 what gives us 802500
+ 8025 × 8000 that is equal 64200000

= 65251275
