Alright, let's work through 21434849 times 41590641 step by step
21434849 × 41590641 = 41590641 × (21434849)
+ 41590641 × 9 resulting in 374315769
+ 41590641 × 40 resulting in 1663625640
+ 41590641 × 800 that is equal 33272512800
+ 41590641 × 4000 which equals 166362564000
+ 41590641 × 30000 that results in 1247719230000
+ 41590641 × 400000 that results in 16636256400000
+ 41590641 × 1000000 that results in 41590641000000
+ 41590641 × 20000000 which equals 831812820000000

= 891489109648209
