Alright, let's work through 77637799 times 96978223 step by step
77637799 × 96978223 = 96978223 × (77637799)
+ 96978223 × 9 resulting in 872804007
+ 96978223 × 90 that results in 8728040070
+ 96978223 × 700 what gives us 67884756100
+ 96978223 × 7000 giving us 678847561000
+ 96978223 × 30000 what gives us 2909346690000
+ 96978223 × 600000 yielding 58186933800000
+ 96978223 × 7000000 resulting in 678847561000000
+ 96978223 × 70000000 resulting in 6788475610000000

= 7529175784651177
