Alright, let's work through 8121 times 8134 step by step
8121 × 8134 = 8134 × (8121)
+ 8134 × 1 that is equal 8134
+ 8134 × 20 that equals 162680
+ 8134 × 100 which equals 813400
+ 8134 × 8000 giving us 65072000

= 66056214
