Alright, let's work through 77804924 times 49042391 step by step
77804924 × 49042391 = 49042391 × (77804924)
+ 49042391 × 4 giving us 196169564
+ 49042391 × 20 which equals 980847820
+ 49042391 × 900 resulting in 44138151900
+ 49042391 × 4000 yielding 196169564000
+ 49042391 × 00000 producing 0
+ 49042391 × 800000 that is equal 39233912800000
+ 49042391 × 7000000 that is equal 343296737000000
+ 49042391 × 70000000 what gives us 3432967370000000

= 3815739504533284
