Alright, let's work through 8140 times 8498 step by step
8140 × 8498 = 8498 × (8140)
+ 8498 × 0 giving us 0
+ 8498 × 40 that equals 339920
+ 8498 × 100 which equals 849800
+ 8498 × 8000 that is equal 67984000

= 69173720
