Alright, let's work through 88678460 times 4221539 step by step
88678460 × 4221539 = 4221539 × (88678460)
+ 4221539 × 0 producing 0
+ 4221539 × 60 that is equal 253292340
+ 4221539 × 400 that equals 1688615600
+ 4221539 × 8000 producing 33772312000
+ 4221539 × 70000 that results in 295507730000
+ 4221539 × 600000 that is equal 2532923400000
+ 4221539 × 8000000 that is equal 33772312000000
+ 4221539 × 80000000 producing 337723120000000

= 374359577349940
