Alright, let's work through 21542236 times 65005883 step by step
21542236 × 65005883 = 65005883 × (21542236)
+ 65005883 × 6 yielding 390035298
+ 65005883 × 30 that equals 1950176490
+ 65005883 × 200 that is equal 13001176600
+ 65005883 × 2000 which equals 130011766000
+ 65005883 × 40000 resulting in 2600235320000
+ 65005883 × 500000 what gives us 32502941500000
+ 65005883 × 1000000 giving us 65005883000000
+ 65005883 × 20000000 which equals 1300117660000000

= 1400372072974388
