Alright, let's work through 20812660 times 42987969 step by step
20812660 × 42987969 = 42987969 × (20812660)
+ 42987969 × 0 which equals 0
+ 42987969 × 60 what gives us 2579278140
+ 42987969 × 600 producing 25792781400
+ 42987969 × 2000 that is equal 85975938000
+ 42987969 × 10000 what gives us 429879690000
+ 42987969 × 800000 resulting in 34390375200000
+ 42987969 × 0000000 yielding 0
+ 42987969 × 20000000 resulting in 859759380000000

= 894693982887540
