Alright, let's work through 20846497 times 82031446 step by step
20846497 × 82031446 = 82031446 × (20846497)
+ 82031446 × 7 what gives us 574220122
+ 82031446 × 90 resulting in 7382830140
+ 82031446 × 400 resulting in 32812578400
+ 82031446 × 6000 what gives us 492188676000
+ 82031446 × 40000 resulting in 3281257840000
+ 82031446 × 800000 that is equal 65625156800000
+ 82031446 × 0000000 that results in 0
+ 82031446 × 20000000 resulting in 1640628920000000

= 1710068292944662
