Alright, let's work through 84723602 times 61961994 step by step
84723602 × 61961994 = 61961994 × (84723602)
+ 61961994 × 2 producing 123923988
+ 61961994 × 00 which equals 0
+ 61961994 × 600 resulting in 37177196400
+ 61961994 × 3000 that equals 185885982000
+ 61961994 × 20000 that equals 1239239880000
+ 61961994 × 700000 yielding 43373395800000
+ 61961994 × 4000000 resulting in 247847976000000
+ 61961994 × 80000000 giving us 4956959520000000

= 5249643318782388
