Alright, let's work through 8306919 times 42213139 step by step
8306919 × 42213139 = 42213139 × (8306919)
+ 42213139 × 9 that results in 379918251
+ 42213139 × 10 that results in 422131390
+ 42213139 × 900 that equals 37991825100
+ 42213139 × 6000 what gives us 253278834000
+ 42213139 × 00000 which equals 0
+ 42213139 × 300000 producing 12663941700000
+ 42213139 × 8000000 which equals 337705112000000

= 350661126408741
