Alright, let's work through 87238717 times 46712878 step by step
87238717 × 46712878 = 46712878 × (87238717)
+ 46712878 × 7 yielding 326990146
+ 46712878 × 10 that equals 467128780
+ 46712878 × 700 which equals 32699014600
+ 46712878 × 8000 resulting in 373703024000
+ 46712878 × 30000 resulting in 1401386340000
+ 46712878 × 200000 that results in 9342575600000
+ 46712878 × 7000000 that is equal 326990146000000
+ 46712878 × 80000000 that equals 3737030240000000

= 4075171544097526
