Alright, let's work through 6379685 times 90930345 step by step
6379685 × 90930345 = 90930345 × (6379685)
+ 90930345 × 5 that is equal 454651725
+ 90930345 × 80 that results in 7274427600
+ 90930345 × 600 which equals 54558207000
+ 90930345 × 9000 yielding 818373105000
+ 90930345 × 70000 resulting in 6365124150000
+ 90930345 × 300000 that is equal 27279103500000
+ 90930345 × 6000000 that equals 545582070000000

= 580106958041325
