Alright, let's work through 64224118 times 81661896 step by step
64224118 × 81661896 = 81661896 × (64224118)
+ 81661896 × 8 yielding 653295168
+ 81661896 × 10 resulting in 816618960
+ 81661896 × 100 what gives us 8166189600
+ 81661896 × 4000 that is equal 326647584000
+ 81661896 × 20000 what gives us 1633237920000
+ 81661896 × 200000 giving us 16332379200000
+ 81661896 × 4000000 that is equal 326647584000000
+ 81661896 × 60000000 that results in 4899713760000000

= 5244663244807728
