Alright, let's work through 27385290 times 64157151 step by step
27385290 × 64157151 = 64157151 × (27385290)
+ 64157151 × 0 resulting in 0
+ 64157151 × 90 yielding 5774143590
+ 64157151 × 200 yielding 12831430200
+ 64157151 × 5000 what gives us 320785755000
+ 64157151 × 80000 that is equal 5132572080000
+ 64157151 × 300000 giving us 19247145300000
+ 64157151 × 7000000 producing 449100057000000
+ 64157151 × 20000000 which equals 1283143020000000

= 1756962185708790
