Alright, let's work through 15998884 times 66282392 step by step
15998884 × 66282392 = 66282392 × (15998884)
+ 66282392 × 4 yielding 265129568
+ 66282392 × 80 what gives us 5302591360
+ 66282392 × 800 that is equal 53025913600
+ 66282392 × 8000 producing 530259136000
+ 66282392 × 90000 that results in 5965415280000
+ 66282392 × 900000 that results in 59654152800000
+ 66282392 × 5000000 that is equal 331411960000000
+ 66282392 × 10000000 that is equal 662823920000000

= 1060444300850528
