Alright, let's work through 90540915 times 78973882 step by step
90540915 × 78973882 = 78973882 × (90540915)
+ 78973882 × 5 yielding 394869410
+ 78973882 × 10 producing 789738820
+ 78973882 × 900 producing 71076493800
+ 78973882 × 0000 producing 0
+ 78973882 × 40000 what gives us 3158955280000
+ 78973882 × 500000 that is equal 39486941000000
+ 78973882 × 0000000 yielding 0
+ 78973882 × 90000000 that is equal 7107649380000000

= 7150367537382030
