Alright, let's work through 24897944 times 508064 step by step
24897944 × 508064 = 508064 × (24897944)
+ 508064 × 4 what gives us 2032256
+ 508064 × 40 that is equal 20322560
+ 508064 × 900 yielding 457257600
+ 508064 × 7000 that results in 3556448000
+ 508064 × 90000 resulting in 45725760000
+ 508064 × 800000 resulting in 406451200000
+ 508064 × 4000000 that equals 2032256000000
+ 508064 × 20000000 giving us 10161280000000

= 12649749020416
