Alright, let's work through 17789993 times 68640042 step by step
17789993 × 68640042 = 68640042 × (17789993)
+ 68640042 × 3 giving us 205920126
+ 68640042 × 90 that is equal 6177603780
+ 68640042 × 900 resulting in 61776037800
+ 68640042 × 9000 resulting in 617760378000
+ 68640042 × 80000 that results in 5491203360000
+ 68640042 × 700000 resulting in 48048029400000
+ 68640042 × 7000000 producing 480480294000000
+ 68640042 × 10000000 resulting in 686400420000000

= 1221105866699706
