Alright, let's work through 24761491 times 12478816 step by step
24761491 × 12478816 = 12478816 × (24761491)
+ 12478816 × 1 resulting in 12478816
+ 12478816 × 90 producing 1123093440
+ 12478816 × 400 what gives us 4991526400
+ 12478816 × 1000 giving us 12478816000
+ 12478816 × 60000 giving us 748728960000
+ 12478816 × 700000 which equals 8735171200000
+ 12478816 × 4000000 that equals 49915264000000
+ 12478816 × 20000000 giving us 249576320000000

= 308994090074656
