Alright, let's work through 4145 times 8798 step by step
4145 × 8798 = 8798 × (4145)
+ 8798 × 5 that is equal 43990
+ 8798 × 40 that is equal 351920
+ 8798 × 100 what gives us 879800
+ 8798 × 4000 which equals 35192000

= 36467710
