Alright, let's work through 25827641 times 10245420 step by step
25827641 × 10245420 = 10245420 × (25827641)
+ 10245420 × 1 resulting in 10245420
+ 10245420 × 40 yielding 409816800
+ 10245420 × 600 producing 6147252000
+ 10245420 × 7000 that results in 71717940000
+ 10245420 × 20000 which equals 204908400000
+ 10245420 × 800000 which equals 8196336000000
+ 10245420 × 5000000 giving us 51227100000000
+ 10245420 × 20000000 that results in 204908400000000

= 264615029654220
