Alright, let's work through 8121 times 8438 step by step
8121 × 8438 = 8438 × (8121)
+ 8438 × 1 that is equal 8438
+ 8438 × 20 what gives us 168760
+ 8438 × 100 that results in 843800
+ 8438 × 8000 which equals 67504000

= 68524998
