Alright, let's work through 21278795 times 37199307 step by step
21278795 × 37199307 = 37199307 × (21278795)
+ 37199307 × 5 yielding 185996535
+ 37199307 × 90 what gives us 3347937630
+ 37199307 × 700 which equals 26039514900
+ 37199307 × 8000 producing 297594456000
+ 37199307 × 70000 giving us 2603951490000
+ 37199307 × 200000 which equals 7439861400000
+ 37199307 × 1000000 that is equal 37199307000000
+ 37199307 × 20000000 giving us 743986140000000

= 791556427795065
