Alright, let's work through 83454442 times 49638291 step by step
83454442 × 49638291 = 49638291 × (83454442)
+ 49638291 × 2 producing 99276582
+ 49638291 × 40 that is equal 1985531640
+ 49638291 × 400 that results in 19855316400
+ 49638291 × 4000 that equals 198553164000
+ 49638291 × 50000 what gives us 2481914550000
+ 49638291 × 400000 what gives us 19855316400000
+ 49638291 × 3000000 what gives us 148914873000000
+ 49638291 × 80000000 that equals 3971063280000000

= 4142535877238622
