Alright, let's work through 66928657 times 67295256 step by step
66928657 × 67295256 = 67295256 × (66928657)
+ 67295256 × 7 giving us 471066792
+ 67295256 × 50 that equals 3364762800
+ 67295256 × 600 producing 40377153600
+ 67295256 × 8000 resulting in 538362048000
+ 67295256 × 20000 that is equal 1345905120000
+ 67295256 × 900000 giving us 60565730400000
+ 67295256 × 6000000 producing 403771536000000
+ 67295256 × 60000000 producing 4037715360000000

= 4503981106551192
