Alright, let's work through 83602672 times 40809376 step by step
83602672 × 40809376 = 40809376 × (83602672)
+ 40809376 × 2 what gives us 81618752
+ 40809376 × 70 that is equal 2856656320
+ 40809376 × 600 resulting in 24485625600
+ 40809376 × 2000 that equals 81618752000
+ 40809376 × 00000 that equals 0
+ 40809376 × 600000 producing 24485625600000
+ 40809376 × 3000000 that results in 122428128000000
+ 40809376 × 80000000 resulting in 3264750080000000

= 3411772876252672
