Alright, let's work through 87257358 times 47446491 step by step
87257358 × 47446491 = 47446491 × (87257358)
+ 47446491 × 8 giving us 379571928
+ 47446491 × 50 giving us 2372324550
+ 47446491 × 300 resulting in 14233947300
+ 47446491 × 7000 which equals 332125437000
+ 47446491 × 50000 which equals 2372324550000
+ 47446491 × 200000 that is equal 9489298200000
+ 47446491 × 7000000 resulting in 332125437000000
+ 47446491 × 80000000 that results in 3795719280000000

= 4140055451030778
