Alright, let's work through 45486417 times 87449357 step by step
45486417 × 87449357 = 87449357 × (45486417)
+ 87449357 × 7 that equals 612145499
+ 87449357 × 10 that is equal 874493570
+ 87449357 × 400 giving us 34979742800
+ 87449357 × 6000 which equals 524696142000
+ 87449357 × 80000 resulting in 6995948560000
+ 87449357 × 400000 giving us 34979742800000
+ 87449357 × 5000000 what gives us 437246785000000
+ 87449357 × 40000000 which equals 3497974280000000

= 3977757918883869
