Alright, let's work through 70779009 times 50085601 step by step
70779009 × 50085601 = 50085601 × (70779009)
+ 50085601 × 9 producing 450770409
+ 50085601 × 00 yielding 0
+ 50085601 × 000 producing 0
+ 50085601 × 9000 resulting in 450770409000
+ 50085601 × 70000 yielding 3505992070000
+ 50085601 × 700000 what gives us 35059920700000
+ 50085601 × 0000000 that equals 0
+ 50085601 × 70000000 that equals 3505992070000000

= 3545009203949409
