Alright, let's work through 77090812 times 67327197 step by step
77090812 × 67327197 = 67327197 × (77090812)
+ 67327197 × 2 producing 134654394
+ 67327197 × 10 producing 673271970
+ 67327197 × 800 yielding 53861757600
+ 67327197 × 0000 that equals 0
+ 67327197 × 90000 yielding 6059447730000
+ 67327197 × 000000 that results in 0
+ 67327197 × 7000000 resulting in 471290379000000
+ 67327197 × 70000000 yielding 4712903790000000

= 5190308286413964
