Alright, let's work through 75915977 times 77100960 step by step
75915977 × 77100960 = 77100960 × (75915977)
+ 77100960 × 7 what gives us 539706720
+ 77100960 × 70 what gives us 5397067200
+ 77100960 × 900 giving us 69390864000
+ 77100960 × 5000 what gives us 385504800000
+ 77100960 × 10000 producing 771009600000
+ 77100960 × 900000 yielding 69390864000000
+ 77100960 × 5000000 that results in 385504800000000
+ 77100960 × 70000000 giving us 5397067200000000

= 5853194706037920
