Alright, let's work through 77175771 times 64492923 step by step
77175771 × 64492923 = 64492923 × (77175771)
+ 64492923 × 1 that equals 64492923
+ 64492923 × 70 which equals 4514504610
+ 64492923 × 700 producing 45145046100
+ 64492923 × 5000 resulting in 322464615000
+ 64492923 × 70000 which equals 4514504610000
+ 64492923 × 100000 producing 6449292300000
+ 64492923 × 7000000 resulting in 451450461000000
+ 64492923 × 70000000 producing 4514504610000000

= 4977291056568633
