Alright, let's work through 81090960 times 45485422 step by step
81090960 × 45485422 = 45485422 × (81090960)
+ 45485422 × 0 giving us 0
+ 45485422 × 60 that is equal 2729125320
+ 45485422 × 900 resulting in 40936879800
+ 45485422 × 0000 that is equal 0
+ 45485422 × 90000 which equals 4093687980000
+ 45485422 × 000000 that equals 0
+ 45485422 × 1000000 what gives us 45485422000000
+ 45485422 × 80000000 that equals 3638833760000000

= 3688456535985120
