Alright, let's work through 68608249 times 31040738 step by step
68608249 × 31040738 = 31040738 × (68608249)
+ 31040738 × 9 that is equal 279366642
+ 31040738 × 40 yielding 1241629520
+ 31040738 × 200 that is equal 6208147600
+ 31040738 × 8000 producing 248325904000
+ 31040738 × 00000 yielding 0
+ 31040738 × 600000 that equals 18624442800000
+ 31040738 × 8000000 resulting in 248325904000000
+ 31040738 × 60000000 resulting in 1862444280000000

= 2129650681847762
