Alright, let's work through 85148151 times 83828971 step by step
85148151 × 83828971 = 83828971 × (85148151)
+ 83828971 × 1 giving us 83828971
+ 83828971 × 50 that equals 4191448550
+ 83828971 × 100 giving us 8382897100
+ 83828971 × 8000 giving us 670631768000
+ 83828971 × 40000 which equals 3353158840000
+ 83828971 × 100000 yielding 8382897100000
+ 83828971 × 5000000 that is equal 419144855000000
+ 83828971 × 80000000 which equals 6706317680000000

= 7137881880882621
