Alright, let's work through 83980172 times 13507334 step by step
83980172 × 13507334 = 13507334 × (83980172)
+ 13507334 × 2 which equals 27014668
+ 13507334 × 70 producing 945513380
+ 13507334 × 100 which equals 1350733400
+ 13507334 × 0000 giving us 0
+ 13507334 × 80000 which equals 1080586720000
+ 13507334 × 900000 which equals 12156600600000
+ 13507334 × 3000000 that is equal 40522002000000
+ 13507334 × 80000000 that results in 1080586720000000

= 1134348232581448
