Alright, let's work through 77047159 times 61259811 step by step
77047159 × 61259811 = 61259811 × (77047159)
+ 61259811 × 9 producing 551338299
+ 61259811 × 50 which equals 3062990550
+ 61259811 × 100 that equals 6125981100
+ 61259811 × 7000 yielding 428818677000
+ 61259811 × 40000 yielding 2450392440000
+ 61259811 × 000000 resulting in 0
+ 61259811 × 7000000 yielding 428818677000000
+ 61259811 × 70000000 that results in 4288186770000000

= 4719894398426949
