Alright, let's work through 20578919 times 3486234 step by step
20578919 × 3486234 = 3486234 × (20578919)
+ 3486234 × 9 which equals 31376106
+ 3486234 × 10 yielding 34862340
+ 3486234 × 900 giving us 3137610600
+ 3486234 × 8000 producing 27889872000
+ 3486234 × 70000 resulting in 244036380000
+ 3486234 × 500000 yielding 1743117000000
+ 3486234 × 0000000 what gives us 0
+ 3486234 × 20000000 that equals 69724680000000

= 71742927101046
