Alright, let's work through 28134714 times 15385478 step by step
28134714 × 15385478 = 15385478 × (28134714)
+ 15385478 × 4 that results in 61541912
+ 15385478 × 10 giving us 153854780
+ 15385478 × 700 which equals 10769834600
+ 15385478 × 4000 yielding 61541912000
+ 15385478 × 30000 which equals 461564340000
+ 15385478 × 100000 producing 1538547800000
+ 15385478 × 8000000 that is equal 123083824000000
+ 15385478 × 20000000 that results in 307709560000000

= 432866023283292
