Alright, let's work through 7740957 times 99124198 step by step
7740957 × 99124198 = 99124198 × (7740957)
+ 99124198 × 7 what gives us 693869386
+ 99124198 × 50 yielding 4956209900
+ 99124198 × 900 resulting in 89211778200
+ 99124198 × 0000 producing 0
+ 99124198 × 40000 giving us 3964967920000
+ 99124198 × 700000 that results in 69386938600000
+ 99124198 × 7000000 yielding 693869386000000

= 767316154377486
