Alright, let's work through 16663449 times 24002953 step by step
16663449 × 24002953 = 24002953 × (16663449)
+ 24002953 × 9 that equals 216026577
+ 24002953 × 40 giving us 960118120
+ 24002953 × 400 resulting in 9601181200
+ 24002953 × 3000 yielding 72008859000
+ 24002953 × 60000 that equals 1440177180000
+ 24002953 × 600000 resulting in 14401771800000
+ 24002953 × 6000000 giving us 144017718000000
+ 24002953 × 10000000 that is equal 240029530000000

= 399971983164897
