Alright, let's work through 21709620 times 60902340 step by step
21709620 × 60902340 = 60902340 × (21709620)
+ 60902340 × 0 producing 0
+ 60902340 × 20 that equals 1218046800
+ 60902340 × 600 which equals 36541404000
+ 60902340 × 9000 which equals 548121060000
+ 60902340 × 00000 that equals 0
+ 60902340 × 700000 yielding 42631638000000
+ 60902340 × 1000000 that is equal 60902340000000
+ 60902340 × 20000000 that results in 1218046800000000

= 1322166658510800
