Alright, let's work through 66260363 times 51029640 step by step
66260363 × 51029640 = 51029640 × (66260363)
+ 51029640 × 3 resulting in 153088920
+ 51029640 × 60 that results in 3061778400
+ 51029640 × 300 giving us 15308892000
+ 51029640 × 0000 producing 0
+ 51029640 × 60000 producing 3061778400000
+ 51029640 × 200000 yielding 10205928000000
+ 51029640 × 6000000 that equals 306177840000000
+ 51029640 × 60000000 producing 3061778400000000

= 3381242470159320
