Alright, let's work through 87443150 times 45238647 step by step
87443150 × 45238647 = 45238647 × (87443150)
+ 45238647 × 0 resulting in 0
+ 45238647 × 50 what gives us 2261932350
+ 45238647 × 100 producing 4523864700
+ 45238647 × 3000 producing 135715941000
+ 45238647 × 40000 producing 1809545880000
+ 45238647 × 400000 producing 18095458800000
+ 45238647 × 7000000 giving us 316670529000000
+ 45238647 × 80000000 producing 3619091760000000

= 3955809795418050
