Alright, let's work through 66243962 times 66558077 step by step
66243962 × 66558077 = 66558077 × (66243962)
+ 66558077 × 2 resulting in 133116154
+ 66558077 × 60 producing 3993484620
+ 66558077 × 900 what gives us 59902269300
+ 66558077 × 3000 producing 199674231000
+ 66558077 × 40000 producing 2662323080000
+ 66558077 × 200000 producing 13311615400000
+ 66558077 × 6000000 giving us 399348462000000
+ 66558077 × 60000000 that results in 3993484620000000

= 4409070723581074
