Alright, let's work through 21093736 times 60735645 step by step
21093736 × 60735645 = 60735645 × (21093736)
+ 60735645 × 6 yielding 364413870
+ 60735645 × 30 which equals 1822069350
+ 60735645 × 700 which equals 42514951500
+ 60735645 × 3000 that results in 182206935000
+ 60735645 × 90000 that is equal 5466208050000
+ 60735645 × 000000 resulting in 0
+ 60735645 × 1000000 that results in 60735645000000
+ 60735645 × 20000000 which equals 1214712900000000

= 1281141661419720
